XCOM 2

Overthrow the aliens at any difficulty level

Overthrow the aliens on Commander difficulty

Overthrow the aliens on Legend difficulty

Build an experimental item in the Proving Grounds

Make contact with a region

Complete the tactical tutorial

Build Resistance Comms

Build the Shadow Chamber

Upgrade a facility

Sell goods worth 1000 supplies to the Black Market (Can span multiple games)

Complete a Rumor

Recover the Blacksite Data

Recover a Codex Brain

Recover the Psi Gate

Complete the Avatar Autopsy

Kill an Avatar

Kill a Sectopod on the same turn you encounter it (in Single Player)

Complete a successful ambush

Hack a Sectopod

Evacuate a soldier whose bleed-out timer is still running

Upgrade a weapon

Completely upgrade a beam weapon with superior grade weapon upgrades

Kill a Berserker in melee combat

Kill a Viper who is strangling a squadmate

Kill a Sectoid who is currently mind controlling a squadmate

Kill an enemy with a hacked turret

Build a facility in every Avenger slot

Sabotage an alien facility

Cause an enemy to fall to its death

Cause an enemy to die in a car explosion

Kill 500 aliens. (does not have to be in same game)

Beat a mission on Commander+ with a squad of soldiers only of the same class (but not Rookie)

Beat a Retaliation mission with 3 or less civilian deaths

Earn a second tier hack reward

Build a radio relay on every continent

Get all of the continent bonuses available in a single campaign

Skulljack each different type of ADVENT soldier (does not have to be in same game)

Skulljack an ADVENT Officer

Recover the Forge Item

Create the Commander's Avatar

Apply a PCS upgrade to a soldier

Kill 3 enemies in a single turn, with a single soldier, without explosives

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 three 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

Beat the Lost Towers mission

Promote a SPARK unit to Champion rank

Complete a mission with three or more SPARK units in the squad

Outfit a SPARK unit with the highest tier weaponry and armor

Defeat a robotic enemy with a SPARK unit

Build a SPARK unit

Kill an enemy primed Derelict MEC before it can self-destruct

Complete the Lost and Abandoned mission

Permanently defeat one of the Chosen

Get four kills from Shadow mode with a Reaper in a single mission

Form a level 3 bond between two soldiers

Raise XCOM's influence with all three factions to High in a single game

Rescue a soldier who was captured by the Chosen