Full list of all 88 XCOM 2 achievements.
The base game contains 50 achievements, and there are 4 DLC packs containing 38 achievements.
Beat the game on Commander+ difficulty in Ironman mode
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
Complete the tactical tutorial
Overthrow the aliens on Commander difficulty
Overthrow the aliens at any difficulty level
Create the Commander's Avatar
Kill 500 aliens. (does not have to be in same game)
Complete the Avatar Autopsy
Recover the Psi Gate
Kill an Avatar
Get all of the continent bonuses available in a single campaign
Build a facility in every Avenger slot
Build a radio relay on every continent
Completely upgrade a beam weapon with superior grade weapon upgrades
Recover the Forge Item
Kill a Sectopod on the same turn you encounter it
Sell goods worth 1000 supplies to the Black Market (Can span multiple games)
Hack and take control of a Sectopod
Beat a Retaliation mission with no more than 3 civilian deaths
Build the Shadow Chamber
Kill 3 enemies in a single turn, with a single soldier, without explosives
Build Resistance Comms
Build an experimental item in the Proving Grounds
Recover a Codex Brain
Sabotage an alien facility
Cause an enemy to die in a vehicle explosion
Skulljack an ADVENT Officer
Upgrade a facility
Kill a Viper who is strangling a squadmate
Kill an enemy with a hacked turret
Upgrade a weapon
Recover the Blacksite Data
Apply a PCS upgrade to a soldier
Evacuate a soldier whose bleed-out timer is still running
Cause an enemy to fall to its death
Make contact with a region
Kill a Sectoid who is currently mind controlling a squadmate
Earn a second tier hack reward
Complete a successful ambush
Complete a Rumor
Overthrow the aliens on Legend difficulty
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)
Beat a mission in June or later using only Rookies
Skulljack each different type of ADVENT soldier (does not have to be in same game)
Use all ruler armor abilities in a single mission
Kill the Archon Ruler
Kill all alien rulers in a single game
Use a ruler armor ability against an alien ruler
Kill the Berserker Ruler
Kill the Viper Ruler
Investigate the Abandoned Research Facility
Purchase all of the final tier Hunter Weapons
Kill an alien ruler the first time you encounter it
Kill an alien ruler while it attempts to escape
Defeat a robotic enemy with a SPARK unit
Outfit a SPARK unit with the highest tier weaponry and armor
Build a SPARK unit
Beat the Lost Towers mission
Kill an enemy primed Derelict MEC before it can self-destruct
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
Hit three shots on a single turn with a SPARK unit after using its Overdrive ability
Permanently defeat one of the Chosen
Raise XCOM's influence with all three factions to High in a single game
Get 15 Headshots against Lost in a single turn
Form a level 3 bond between two soldiers
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
Rescue a soldier who was captured by the Chosen
Complete the Lost and Abandoned mission
Raise a Templar to maximum Focus level, spend it all, and reach the max again in a single mission
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