Full list of all 88 XCOM 2 achievements.
The base game contains 50 achievements, and there are 4 DLC packs containing 38 achievements.
Build a facility in every Avenger slot
Beat a mission on Commander+ with a squad composed entirely of soldiers of the same class (but not Rookie)
Kill a Berserker in melee combat
Sell goods worth 1000 supplies to the Black Market (Can span multiple games)
Kill an enemy with a hacked turret
Evacuate a soldier whose bleed-out timer is still running
Kill a Sectoid who is currently mind controlling a squadmate
Kill 500 aliens. (does not have to be in same game)
Overthrow the aliens at any difficulty level
Hack and take control of a Sectopod
Create the Commander's Avatar
Complete the Avatar Autopsy
Kill 3 enemies in a single turn, with a single soldier, without explosives
Recover the Forge Item
Kill a Sectopod on the same turn you encounter it
Earn a second tier hack reward
Recover the Psi Gate
Kill an Avatar
Skulljack each different type of ADVENT soldier (does not have to be in same game)
Upgrade a facility
Beat a Retaliation mission with no more than 3 civilian deaths
Sabotage an alien facility
Build the Shadow Chamber
Cause an enemy to die in a vehicle explosion
Build Resistance Comms
Build an experimental item in the Proving Grounds
Recover a Codex Brain
Skulljack an ADVENT Officer
Apply a PCS upgrade to a soldier
Recover the Blacksite Data
Kill a Viper who is strangling a squadmate
Make contact with a region
Cause an enemy to fall to its death
Complete a successful ambush
Upgrade a weapon
Complete a Rumor
Complete the tactical tutorial
Overthrow the aliens on Commander difficulty
Overthrow the aliens on Legend difficulty
Completely upgrade a beam weapon with superior grade weapon upgrades
Beat the game on Commander+ difficulty by July 1st (July 15th for War of the Chosen)
Beat the final mission using only conventional gear
Beat the game on Commander+ difficulty without buying a Squad Size upgrade
Beat the game on Commander+ without losing a soldier
Win a multiplayer match.
Kill an enemy with every heavy weapon in the game (Doesn't have to be in the same game)
Build a radio relay on every continent
Get all of the continent bonuses available in a single campaign
Beat a mission in June or later using only Rookies
Beat the game on Commander+ difficulty in Ironman mode
Investigate the Abandoned Research Facility
Kill the Viper Ruler
Kill the Berserker Ruler
Kill the Archon Ruler
Kill all alien rulers in a single game
Purchase all of the final tier Hunter Weapons
Use all ruler armor abilities in a single mission
Use a ruler armor ability against an alien ruler
Kill an alien ruler the first time you encounter it
Kill an alien ruler while it attempts to escape
Build a SPARK unit
Beat the Lost Towers mission
Promote a SPARK unit to Champion rank
Complete a mission with three or more SPARK units in the squad
Defeat an Avatar with a SPARK unit
A SPARK unit survives a mission it started with less than half health
Outfit a SPARK unit with the highest tier weaponry and armor
Hit three shots on a single turn with a SPARK unit after using its Overdrive ability
Defeat a robotic enemy with a SPARK unit
Kill an enemy primed Derelict MEC before it can self-destruct
Perform three offensive actions against the same target with a Skirmisher in a single turn
Get four kills from Shadow mode with a Reaper in a single mission
Raise XCOM's influence with all three factions to High in a single game
Permanently defeat one of the Chosen
Rescue a soldier who was captured by the Chosen
Complete the Lost and Abandoned mission
Get 15 Headshots against Lost in a single turn
Raise a Templar to maximum Focus level, spend it all, and reach the max again in a single mission
Form a level 3 bond between two soldiers
Complete a mission with all Tired soldiers and no casualties
Complete the 'Blast From the Past' legacy operation with a gold medal
Complete the 'It Came From the Sea' legacy operation with a gold medal
Complete the 'Avenger Assembled' legacy operation with a gold medal
Complete 'The Lazarus Project' legacy operation with a gold medal
Complete a random legacy operation
Complete a Skirmish Mission
Complete a Local Challenge
Complete a single player campaign with Tactical Legacy Pack content