Stellaris has 99 different achievements on Xbox, 100 different trophies on PlayStation and 135 Xbox achievements on the Windows version of Stellaris (separate from Steam achievements). Achievements have no in-game effects, the achievement just pops up in-game and is then added to the player's profile.
The difficulty of each achievement varies; some achievements are very easy (e.g. colonizing a planet), while some are extremely difficult (e.g. end-game crisis achievements). The below list groups the various achievements by a difficulty level as assessed by the wiki editors (uncategorized - UC - achievements haven't been assessed yet).
Achievements can only be gained in Ironman games. They can be earned while playing older versions of the game as long as said achievements were present in that version, as well as after any empire has attained victory.
General tips[edit source]
- Using Settings can make several achievements easier. In particular, setting the galaxy to have no other AI empires (besides Primitive Civilizations) prevents spaceborne aliens from being killed by AI empires; this is useful for getting the "Warrior of Light" achievement as wraiths tend to wander the galaxy.
List of achievements[edit source]
The "Ver" column indicates in which version a certain achievement was added. Achievements cannot be earned prior to the version they were added in.
The "DI" column is for difficulty as assessed by wiki editors. VE = Very Easy, E = Easy, M = Medium, H = Hard, VH = Very Hard, I = Insane, UC = Uncategorized.
Base game[edit source]
|Complete all levels of an archaeological site (without failing)||The Galactic Doorstep origin creates an archaeological site within the first years of the game.||2.3||VE|
|Number of owned planets > 1||Starting the game with the Guaranteed Habitable Worlds setting to 1 or 2 creates very suitable planets nearby.||1.0||VE|
|Number of acquired rare techs > 0||The Void Dwellers origin starts with a rare technology as a permanent research option.||1.0||VE|
|Has built a robot pop||The Mechanist origin starts with the technology to build robots.||1.0||VE|
|Requires Wormhole Stabilization and traveling through any wormhole.||Start the game with the Wormhole Pairs setting to X5.||2.0||VE|
|Has accumulated energy credits > 999||1.0||VE|
|Has surveyed all 16 celestial body types||1.0||VE|
|Has traded with another empire||If no empire wants to trade, gifts count too.||1.0||VE|
|income >= 1.||Need to have >=1 income for all 11 tradable resources. Achievement tooltip is out of date.||1.4||VE|
|Has, as a xenophobe empire, destroyed and purged the sapient inhabitants of all other empires||The Fanatic Purifiers civic is perfect for the achievement
You will automatically obtain the achievement if you start a game with no other empires (set number of AI empires, fallen empires, primitives, and marauders to 0).
|Vivisect an alien in the first contact menu
||The option is not available to all ethics. You are not guaranteed to catch the alien ships, so this may require multiple attempts.||3.0||VE|
|Have no negative events happen to you or another empire during First Contact.||The player has to have the Proactive or Cautious First Contact Protocol policy to get the achievement.||3.0||VE|
|Has conquered another species' homeworld||Custom empires with nothing but bad traits can be created.||1.0||E|
|Number of vassals >2||Creating 3 sectors and releasing them as vassals may be faster than forcefully vassalizing empires.||1.0||E|
|Has terraformed a planet||1.0||E|
|Has uplifted a species||Start a game with Pre-FTL Civilizations and Pre-Sapient Species set to max.||1.0||E|
|Monthly income of minerals > 249||1.0||E|
|Choose to support the Galactic Community when it is first proposed||The Common Ground and Hegemon origins guarantee this achievement unless another empire has the same origins.||2.6||E|
|Has a planet with > 99 Pops.||2.2||E|
|Have an System-Capital Complex on your capital||1.0||E|
|Has accepted a gift from a patronising Enigmatic Observer or Keepers of Knowledge fallen empire||Accepting a request or completing a task will eventually lead to a gift being bestowed.||1.4||E|
|The ruler of your empire is different from your founding species||Oligarchic and Corporate authority changes rulers often and allows the manual selection of a ruler for 2000 Unity.||1.4||E|
|As a humanoid species, has completed Covert Infiltration of a primitive reptilian species and incorporated them into the empire||Setting Habitable Worlds to 0.25X and Pre-FTL Civilizations and Pre-Sapient Species to 5X ensures a reptilian civilization is found more easily.||1.4||E|
|Don't go to war for 200 consecutive years as a Pacifist or Fanatic Pacifist empire||Starting the game with no AI empires makes getting this achievement a matter of time.||1.4||E|
|Has accumulated energy credits >4999||1.0||E|
|Unlock all 42 Traditions||Start with the Tech/Tradition Cost setting to 5X.||2.0||E|
|Has won a war||Must be the empire that declared war or was declared war against; being brought into a war via Defensive Pact, Independence Guarantee or Federation doesn't count.||1.0||E|
|Has a fleet with size >119||See Command Limit on how to increase the Command Limit.||1.0||E|
|Number of acquired rare techs >14||The Void Dwellers origin starts with a rare technology as a permanent research option.||1.0||M|
|Is federation leader||Empires with the Fanatical Befrienders personality offer the highest acceptance rate. You can also create a custom empire with the Common Ground or Hegemon origin.||1.0||M|
|Gets > 999 energy credits from trade routes.||Wealth Creation trade policy needs 1000 Trade Value, all others require 2000.||2.2||M|
|Have a Citadel with > 40000 fleet power||2.0||M|
|Has enlightened a primitive civilization from the Bronze or Stone Age||Setting Habitable Worlds to 0.25X and Pre-FTL Civilizations and Pre-Sapient Species to 5X ensures a civilization with the correct era is found more easily.||1.4||M|
|Has genetically modified a species||Can be obtained from the start if the Toxoids DLC is installed via the Overtuned origin.||1.0||M|
|have fleet power > 99999||1.0||M|
|Own 4 Gateways which have been activated||Start a game with the Abandoned Gateways setting to 5X and the Galactic Doorstep origin.||2.0||M|
|Own at least 1 relics||Relics are most easily obtained from archaeological sites or completing the precursor event chain.||2.3||M|
|Have empires representing every ethic (it can be fanatic or normal) in your Federation||It is easier for the player's empire to change their own ethics when already in a federation with five unique ethics from other empires. The Federations DLC allows overcoming the federational invitation process by vasalizing empires with the subject joining law on yes.||2.6||M|
|Has terraformed a planet into a Gaia world||Gaia Worlds created by events also count.||1.4||M|
|Have total Pops > 500 and Enslaved Pops > 200||The Slaver Guilds or Indentured Assets civic will ensure the correct ratio if you have 500 Pops.||1.4||M|
|Have 200 Starbases including Outposts||2.0||M|
|Monthly income of minerals > 999||1.0||M|
|Use the active effect of a Relic by spending Unity or other resources||2.3||M|
|Finished the game via one of the victory conditions||The zero empires trick will not work and disable this achievement, so allow an AI empire to spawn. Set the mid-game, end-game and victory years to minimum. If you need additional help playing on Civilian difficulty and force-spawn a custom empire with bad traits as your opponent.||1.4||M|
|Has completed a precursor event chain and travelled to the subsequently revealed system||1.4||M|
|Have 100 Intel on five different empires at the same time.||The Sentry Array increases your passive Intel level by 40. Use the zero empires trick to focus on constructing the megastructure, then release 5 vassals.||3.0||H|
|Has invaded Earth, found in the Sol system, while it is in the machine age. Earth must spawn already in the Machine Age, not reach it via event or progress over time.||Sol has a 50% chance to spawn regardless of galaxy size if no empires have it as its starting system, therefore it is recommended that a tiny galaxy be used to make it easier to find and claim the Sol system. If it spawns, it has a 25% chance of being at the correct era for this achievement, for a total chance of 12.5%.||1.4||H|
|Have total Pops > 200 and 75% of them as robots||Best done by going for The Flesh Is Weak ascension perk.||1.4||H|
|Either go the route of building one, repairing one or capturing one from a Fallen Empire.||This achievement is disabled by the Shattered Ring origin.||1.4||H|
|Has completed the In Limbo anomaly either after having researched synths, or prior to accepting an enigmatic observer fallen empire's relevant request following.||See Limbo for event chain details.||1.4||H|
|Number of different species on a planet > 10||Can be obtained from the start if the First Contact DLC is installed via the Broken Shackles origin and a sufficiently large galaxy.||1.4||H|
|Has chosen and completed the project to lower the barrier on a shielded world||Shielded worlds appear inside the borders of the Fanatic Xenophobe Fallen Empire.||1.4||H|
|Be a Xenophile or Fanatic Xenophile empire and have migration treaties > 10||Use the zero empires trick. Release 10 vassals and form a migration treaty with them.||1.4||H|
|Colonize 4 worlds with the Holy World modifier||This achievement becomes much easier if DLCs are installed. With the Ancient Relics DLC you can obtain the Head of Zarqlan relic and gain the ability to colonize Holy Worlds. With Federations it becomes even easier as you can start as a Scion and colonize the Holy Worlds from the start.||1.4||VH|
|Destroy the Contingency Secret Lair||Like all crises, lowering the Crisis Strength setting to 0.25x makes this a lot easier to achieve.||1.8||VH|
|Has captured the Prethoryn queen||Like all crises, lowering the Crisis Strength setting to 0.25x makes this a lot easier to achieve.||1.0||VH|
|Destroy the last Extradimensional Invader portal||Like all crises, lowering the Crisis Strength setting to 0.25x makes this a lot easier to achieve.||1.0||VH|
|Has found a way to stop the synthetic infiltration||Complete the event chain to detect synthetic infiltrators during the Contingency crises.||1.0||VH|
|Has completed the Horizon Signal event chain and either outcome||The difficulty lies in having the Horizon Signal event spawn - there is a 5% chance at the start of each game that a random black hole in the galaxy will contain the beginning of the event chain. Following the events is fairly straightforward - in the end, accepting the Worm's offer is the easier option.||1.4||VH|
|Has purchased a scientist from a curator enclave after having developed sufficient opinion with them to do so||Even though the Curator Enclave appears with Distant Stars as well, this achievement requires the player to have Leviathans.||1.4||E|
|Has chosen to become a patron of an artisan troup enclave and waited 10 years for the initial energy credits payment to expire||This achievement appears to require 20 years, not 10. Renew the patronage at least once.||1.4||E|
|Has purchased a strategic resource from a trader enclave||1.4||E|
|Has destroyed an enclave station||It is recommended to destroy an artisan enclave if going for this achievement, as it will not incur a negative opinion penalty with other empires, unlike the other types of enclave, and to also keep in mind that such stations generally possess ~11k fleet power.||1.4||M|
|Has defeated the Automated Dreadnought and chosen to repair it||See the Dreadnought main article for information in how to defeat it.||1.4||H|
|Has defeated the Ether Drake, placed a mining station on Dragon Hoard and chosen to incubate the dragon egg once the event fires||The MTTH for this event is 600 months after the mining station is placed. See the Ether Drake main article for information in how to defeat it.||1.4||H|
|Has peacefully completed the Infinity Machine event and, by luck, resulted in the black hole gaining The Mirror Of Knowledge modifier, among other things||Agree to assist the Infinity Machine (must not be Gestalt Consciousness) and complete the 1800 day special project "Understanding Infinity". When the project completes the game randomly selects the outcome and the desired outcome of success with the modifier required for the achievement has a 25% chance of occurring. The other results are a 50% chance of failure and a 25% chance of success with no modifier (i.e. a 75% chance of an outcome that does not obtain the achievement). If a successful result is obtained the specific type of success is still hidden from the player and not revealed until the Infinity Machine enters the black hole and the screen showing the rewards appears.||1.4||H|
|Has defeated the Stellarite devourer and chosen to make it a trophy (requires xenophobe or militarist ethics)||See the Stellarite Devourer main article for information in how to defeat it.
After you have defeated it, pick the "Retrieve the egg sac" option and wait for the parade situation to succeed.
|Has successfully defeated and completed the event chain of the Enigmatic Fortress||The Enigmatic Fortress article contains a guide to complete the event chain.||1.4||H|
|Has defeated the Spectral Wraith||See the Spectral Wraith main article for information in how to defeat it.||1.4||H|
|Has defeated the Dimensional Horror||See the Dimensional Horror main article for information in how to defeat it.||1.4||H|
|Has taken up the position of the Leader of the League of Non-Aligned Empires during a War in Heaven which has then defeated both awakened empires.||Best time to go for this is when a crisis is happening at the same time near an Awakened Empire. As a federation's president is locked in during a war, this requires you to be the strongest empire in the galaxy to gain the option to form the League.||1.4||VH|
|Is a hive mind and has >999 Pops.||This achievement can be obtained surprisingly fast by playing with Logistic Growth Ceiling to maximum and Growth Required Scaling to minimum. Just make sure you can support the population growth with new planets.||2.2||E|
|Has taken the Breach the Shroud tradition and completed the resulting special project.||1.5||M|
|Has >499 pops under Utopian living standards||Even though Utopian Living Standards are available in the game without the Utopia DLC, this achievement requires the player to have it.||1.5||M|
|Any owned Habitat in a system with a Black Hole||Achievement does not trigger on stars that were turned into black holes by events.||1.5||M|
|Has > 4 species enslaved as Livestock.||Use the zero empires trick and start the game with the Pre-FTL Civilizations and Pre-Sapient Species set to max. Enslave 5 of them as Livestock.||1.5||M|
|Has constructed a complete Dyson sphere||A repaired destroyed Dyson Sphere does not count||1.5||H|
|A species has > 7 trait points||Requires the Engineered Evolution Ascension Perk and the completion of the Genetic tradition tree.||1.5||H|
|Has 4 completed Megastructures.||Repaired destroyed Megastructures also count, which can be useful if you lack enough DLC to get 4 normally.||2.2||H|
|Has constructed a complete Sentry array||A repaired destroyed Sentry Array does not count.||1.5||H|
|Has taken the Synthetic Age tradition and completed the resulting special project.||1.5||H|
|Has constructed a complete Ring World||A repaired destroyed Ringworld does not count.||1.5||H|
|Has constructed a complete Science nexus||A repaired destroyed Science Nexus does not count.||1.5||H|
Synthetic Dawn[edit source]
|As a Determined Exterminator, have the number of organic empires be < 1||Curiously, the Determined Exterminator civic is not required to complete this achievement.
You will automatically obtain the achievement if you start a game with no organic empires (set number of AI empires, Fallen Empires, and marauders to 0).
One can also get this achievement after getting the "Suffer not the Alien" achievement by switching to a synthetic species through the synthetic ascension path.
|As a Driven Assimilator, have 5 different cyborg species||Use the zero empires trick and start the game with the Pre-FTL Civilizations and Pre-Sapient Species set to max. Invade and assimilate 4 civilizations.||1.8||E|
|Has terraformed a planet into a Machine World||Two ascension perks are required to be chosen before the option to unlock machine worlds is made available.||1.8||M|
|Have the Rogue Servitor civic and >9 pops which started the game in a Fallen Empire||Use the zero empires trick and start the game with at least two Fallen Empires in case one spawns as Ancient Caretakers. Set the end-game date as late as possible. Become strong enough and conquer a world from a Fallen Empire.||1.8||M
|Has destroyed another Empire's capital planet with a World Cracker Colossus||Unlock and construct a World Cracker, create a vassal, release it and once the truce is over declare war and destroy their capital.||2.0||M|
|Defeat a Fallen Empire Titan fleet with your own Titan.||Use the zero empires trick. When starting the game set the end-game year as late as possible to avoid Fallen Empires awakening, set the tech costs to minimum to keep researching combat-related repeatable technologies and set the number of Fallen Empires to maximum because not all of them will spawn with a titan. Increase Naval Capacity as much as possible to field a fleet of titans, then attack the Fallen Empire.||2.0||H|
|Destroy the Great Khan and his/her fleet in battle||The Great Khan is killed in battle when his fleet is destroyed or defeated in a battle twice.||2.0||H|
|Use a Global Pacifier Colossus to shield a planet belonging to a Fanatic Purifiers, Devouring Swarm, Determined Exterminator||This achievement becomes far easier if the Synthetic Dawn DLC is installed. Create a custom Determined Exterminator empire and force-spawn it, then play as a Machine Intelligence to avoid conflict with them until you unlock the Colossus.||2.0||H|
Stay on Target
Destroy another Empire's Colossus while it is in the process of firing on a planet.
|Destroy an enemy Colossus while it is firing on a planet||The process of "firing on a planet" includes both the preliminary three-month "charging" phase as well as the one-month "firing" phase. Fallen Empires can spawn with one Colossus, and may build one after awakening (the Spiritualist FE will immediately awaken if you crack a holy world). The AI will have its Colossus try to run away when you enter the system with your fleet(s). It is therefore advisable that you extend your weapons range as much as possible, and/or enter as close as possible to the Colossus so that you may engage it before it leaves orbit (as you will not get the achievement if the firing process is interrupted by leaving orbit before your attack).||2.0||I|
Distant Stars[edit source]
|Has been the first to open a L-Gate||Starting the game with no AI empires makes getting this achievement a matter of time.||2.1||E|
|Make friends with a Space Amoeba||See Lost Amoeba for event chain details.||2.1||M|
|Has defeated the Voidspawn||See the Voidspawn main article for information in how to defeat it.||2.1||H|
|Has defeated the Tiyanki Matriarch||See the Tiyanki Matriarch main article for information in how to defeat it.||2.1||H|
|Has defeated the Scavenger Bot||See the Scavenger Bot main article for information in how to defeat it.||2.1||H|
|Have the Corporate government type and have branch offices on other empires' capitals > 5||This achievement will not unlock if playing as a Criminal Heritage.||2.2||M|
|Has constructed a complete Matter Decompressor||A repaired destroyed Matter Decompressor does not count.||2.2||H|
|Has constructed a complete Mega-Art Installation (including the Perfection stage) in a system within a nebula||A repaired destroyed Mega-Art Installation does not count.||2.2||H|
|Has constructed a complete Strategic Coordination Center||A repaired destroyed Strategic Coordination Center does not count.||2.2||H|
|Has constructed a complete Interstellar Assembly||A repaired destroyed Interstellar Assembly does not count.||2.2||H|
|Win the Galatron in the Reliquary or take it from another empire||The Galatron is a very rare reward from the Caravaneers reliquaries. Each reliquary has a 0.5% chance of containing the Galatron, and while reliquaries can be bought indefinetely, each after the initial 6 bought with CaravanCoinz costs an increasingly higher amount of energy. Alternatively, a save file can be made before buying a reliquary, and dozens of copies to load and discard until the Galatron is obtained (Documents\Paradox Interactive\Stellaris\save games). This may also be obtained along with "Raiders of the Lost Galatron" by taking the Galatron from an AI empire that has it.||2.2||VH|
|Capture the Galatron from an empire with it in war||Getting the Galatron gives all empires a CB for taking it from its current owner. Either wait and hope an empire gets it from the reliquaries and then declare war on them, or get the Galatron yourself, lose it in a war and reconquer it after the truce.
If you have the Synthetic Dawn you can use the AI rebellion trick. Get the Galatron, make the AI rebellion situation start, fight until white peace and once the truce expires declare war for the Galatron.
Ancient Relics[edit source]
|Use the Reverse-Engineer Arcane Technology relic option||Requires the Arcane Deciphering technology which unlocks Reverse-Engineer Arcane Technology option, which will give 1 of 4 possible outcomes at random, getting either a random technology or a bonus to tech speed will give the achievement.||2.3||E|
|Has >99 Minor Artifacts||Getting the Rubricator relic may help in cases where no other way to obtain minor artifacts is available. This achievement becomes far easier if the Federations DLC is installed. The On the Shoulders of Giants origin will provide a large number of artifacts, occasionally enough for the achievement.||2.3||E|
|Finish the Zroni Precursor chain||As the archaeological site to start the Zroni chain is only found on habitable planets, it may help to only survey those to prevent another precursor chain from being triggered.||2.3||M|
|Finish the Baol Precursor chain||As the archaeological site to start the Baol chain is only found on habitable planets, it may help to only survey those to prevent another precursor chain from being triggered.||2.3||M|
|Own at least 5 relics||Use the zero empires trick. The following relics are guaranteed every game: Crystal of Odryskia, Miniature Galaxy, The Omnicodex, The Surveyor.||2.3||M|
|Level up a Federation you are in||The Common Ground and Hegemon origins make this achievement very easy to get.||2.6||VE|
|Have your Diplomatic Weight > 9000||Achievement is easily achieved by the endgame of a typical playthrough.||2.6||E|
|Be the leader of a Level 5 Federation||The Common Ground and Hegemon origins make this achievement much easier.||2.6||E|
|Reject the creation of the galactic community and have at least once left a Federation||Use the zero empires trick. Become sufficiently powerful and then release three or more vassals. Release one of them and form a Federation together, then leave it. When offered to form the Galactic Community, refuse. As soon as the Galactic Community is establishes the achievement will unlock.
Joining the Galactic Community (even after initially rejecting its creation) before leaving a Federation will stop this achievement from firing.
|Has constructed a complete Mega-Shipyard||A repaired destroyed Mega-Shipyard does not count. Can be gotten without the DLC if a completed Mega-Shipyard is acquired from an Awakened Empire.||2.6||M|
|Build a Juggernaut ship type||2.6||M|
|Pass any Denounce resolution on an Empire that isn't in breach of Galactic Law||Use the zero empires trick. Become sufficiently powerful and then release two or more vassals. In a few months you will be offered to form the Galactic Community. Do so and you will be strong enough to determine the outcome of all resolutions yourself.||2.6||M|
|Defeat an empire that uses the Supremacist Diplomatic Stance with the Humiliate Wargoal||To humiliate another empire, you must have a rivalry against them and no access to Ideology war goals. See Warfare. You may have to send envoys to harm relations first. For this achievement, the other empire must be in Supremacist diplomatic stance at the time of war declaration.
if Apocalypse DLC is instaled, using a Colossus on a Holy World will cause the Spiritualist Fallen Empire to immediately awaken in the Supremacist Diplomatic Stance and will immediately declare war on you, allowing you to select the Humiliate Casus belli. Be warned, they will instantly receive additional fleets as they awaken, make sure they are at least inferior to you military wise.
|Destroy 10 ships or conquer a planet of an empire you have not established contact with.||An easy way to get this achievement is to engage spaceborne aliens that are already hostile. The achievement will only unlock once the communications are established.||3.0||VE|
|When an operation fails, disavow an Asset instead of trying to re-establish contact.||3.0||E|
|Pass the Proclaim Galactic imperium resolution with you as Galactic Custodian||Use the zero empires trick. Become sufficiently powerful and then release two or more vassals. In a few months you will be offered to form the Galactic Community. Do so and you will be strong enough to determine the outcome of all resolutions yourself.||3.0||M|
|Become the Crisis and destroy the Galaxy||Use the zero empires trick. Release a vassal or more, grant independence and farm Menace. If Apocalypse is installed you don't need vassals, just destroy worlds with a World Cracker to gain Menace. Build the Aetherophasic Engine and unlock the achievement.||3.0||H|
|Become Galactic Custodian, defeat the end-game Crisis, and then end the Custodianship before finishing your term.||This can be done more easily using a mid-game Crisis to become the Custodian. Then approve the Galaxy Defense Force and built an army to be prepared for the end-game Crisis. The term limit is 30 years, but you can increase it with the resolution: Extend Custodianship. After defeating the Crisis, approve the resolution: End Custodianship.||3.0||H|
|Complete 10 different operations (none of the same) during one game||There are only 9 distinct operations by default. More are unlocked by having the End Game Crisis Active (easier) or by using a spy network against the Galactic Emperor (harder). The "Target Seditionists" operation does not count towards this achievement.||3.0||H|
|With the Galactic Imperium proclaimed, be the instigator of a successful rebellion. You will need to Enforce Demands, not Status Quo, to unlock this achievement.||The hardest part is fulfiling the conditions to nominate an AI empire as the Galactic Custodian and later on to proclaim the Galactic Imperium. There are some ways to improve the chances or force an AI empire into this role. Once the AI is Galactic Emperor, you have to bring them down by undermining their authority and sparking a rebellion. You can choose one of these paths:
The waiting game
Increase the council size to 5 (the maximum) and enable veto power. Wait for a crisis to trigger and contain it but don't let it be destroyed. Either veto or quickly pass any resolutions by other council members to free their proposal slots. Ideally, an authoritarian empire nominates itself, as they are more likely to proclaim the Galactic Imperium later. Once a suitable AI empire nominates itself, start building a spy network on them. Support their nomination and any term extensions, but veto the creation of the Galactic Defense Force. Once the Imperium has been proclaimed, assign envoys to undermine imperial influence. When it is low enough, use your spy to start the rebellion. You can also use an operation to lower imperial authority if envoys are not enough. Be ready to fight the Emperor and any loyalists (which can be everyone except you and your vassals). Avoid making claims (and give up existing claims), as the "demanding unoccupied system/planet" surrender acceptance malus applies, despite the fact that you cannot conquer systems with this war goal and casus belli.
The multiplayer trick
You can host your singleplayer game in a multiplayer session. When you host/join a multiplayer game, you are given the full list of empires to control. You can pick one that you want to designate as the Imperial Core and push them towards this goal.
If you have the Synthetic Dawn you can use the AI rebellion trick. Become galactic emperor, make the AI rebellion situation start, fight until white peace and after a while you will be given the option to join the Galactic Imperium. Accept and then undermine Imperial Authority via the espionage system. Once intel is high enough begin the rebellion operation.
|Release a vassal and modify its contract.||3.4||E|
|Destroy the Shroudwalker enclave which is reachable through the shroud tunnel. Easily done with ~15k fleet power. Note that the Shroudwalkers will leave the galaxy once the endgame crisis appears.||3.4||M|
|Use the zero empires trick. Release three vassals and modify the terms so that each one is a specialized subject. It is possible to force a vassal to accept terms, because refusing contract changes costs influence, if they don't have enough influence they cannot refuse, hence they will accept any deal.||3.4||M|
|Avoid exploring until you can repair the Quantum Catapult megastructure. Then catapult 10 crewed science ships into unexplored regions. Avoid catapulting near explored systems as the Quantum Catapults may send them there instead. The easiest option is to build ten science ships and assign/re-assign a single scientist before each launch, i.e. do not recruit ten scientists.
Alternatively, you may also send a single ship, return to the catapult, and send it again, repeating this process until you get the achievement.
|Needs a fully upgraded capital building on planet and set the planet designation to Fortress World, have an orbital ring tier 3 around the planet filled with 4 planet defense modules (guns, missiles, hangars) and contrary to what the achievement claims an Orbital Shield Generator,. If needed build some defense platforms on the orbital ring to get to 10k power.||3.4||M|
|Own 30 systems all connected to each other, build a Hyper Relay in every one of them.||3.4||M|
|Start with the Slingshot to the Stars origin and at least one Fallen Empire. While repairing the megastructure construct many corvettes. Declare war on the Fallen Empire and slingshot all corvettes into its capital system to ensure at least one of them arrives correctly.||3.4||M|
|This achievement becomes easier if you have the Megacorp DLC. Start with the Naval Contractors and Private Military Companies civics to have the capacity to create three Mercenary Enclaves from the start.
You can also conquer other Empires regions with a mercenary enclave in there. After the war ends you will become the new patron of this mercenary enclave.
|Pledge secret fealty to another empire and have them win an Allegiance War.||This can be done using the multiplayer trick to get empires to declare the correct war.||3.4||H|
|See Unexpected Mineral Seams for event chain details. Destroying the crystal entity by having a fleet bombard it from orbit does not award the achievement. It is necessary for an army to deliver the killing blow.||3.4||H|
|Scrapped an organic fleet to the salvager enclave||You need to scrap a fleet created by the Prethoryn Brood-Queen relic. If Distant Stars is installed scrapping the amoeba from the Lost Amoeba event will grant the achievement too.||3.4||VH|