XCOM 2 has 80 achievements worth 1525 gamerscore

Earth Avenged 0 Overthrow the aliens at any difficulty level	20
Defender of Humanity 0 Overthrow the aliens on Commander difficulty	30
Immortal Commander 0 Overthrow the aliens on Legend difficulty	50
Tinker 0 Build an experimental item in the Proving Grounds	10
Rise of the Resistance 0 Make contact with a region	10
First Blood 0 Complete the tactical tutorial	10
Rebel Radio 0 Build Resistance Comms	10
Codebreaker 0 Build the Shadow Chamber	10
Room to Grow 0 Upgrade a facility	10
Shadow Broker 0 Sell goods worth 1000 supplies to the Black Market (Can span multiple games)	20
Rumor Hunter 0 Complete a Rumor	10
A Horrible Truth 0 Recover the Blacksite Data	10
A Grim Key 0 Recover a Codex Brain	10
A Dark Doorway 0 Recover the Psi Gate	10
A Line Crossed 0 Complete the Avatar Autopsy	10
A God Falls 0 Kill an Avatar	10
Meat Over Metal 0 Kill a Sectopod on the same turn you encounter it (in Single Player)	20
Like Clockwork 0 Complete a successful ambush	15
Mechlord 0 Hack a Sectopod	20
Nick of Time 0 Evacuate a soldier whose bleed-out timer is still running	20
Locked and Loaded 0 Upgrade a weapon	10
Excalibur 0 Completely upgrade a beam weapon with superior grade weapon upgrades	20
David and Goliath 0 Kill a Berserker in melee combat	20
Breathing Room 0 Kill a Viper who is strangling a squadmate	20
Come Back To Me 0 Kill a Sectoid who is currently mind controlling a squadmate	20
Stop Hitting Yourself 0 Kill an enemy with a hacked turret	20
Shen's Legacy 0 Build a facility in every Avenger slot	20
Bring It Down 0 Sabotage an alien facility	10
Have a Nice Trip 0 Cause an enemy to fall to its death	20
Car Wrecked 0 Cause an enemy to die in a vehicle explosion	20
Exquisite Timing 0 Beat the game on Commander+ difficulty by July 1st	40
Who Needs Tygan? 0 Beat the final mission using only conventional gear	30
The Few and the Proud 0 Beat the game on Commander+ difficulty without buying a Squad Size upgrade	40
The Untouchables 0 Beat the game on Commander+ without losing a soldier	40
Pile 'Em Up 0 Kill 500 aliens (does not have to be in same game)	20
The Most Dangerous Game 0 Play in a multiplayer match	20
Overpowered 0 Beat a mission on Commander+ with a squad of soldiers only of the same class (but not Rookie)	35
Heroes of the Resistance 0 Beat a Retaliation mission with 3 or less civilian deaths	15
Cyberlord 0 Earn a second tier hack reward	10
Heavy Metal 0 Kill an enemy with every heavy weapon in the game (doesn't have to be in the same game)	30
The Sun Never Sets 0 Build a radio relay on every continent	30
Global Resistance 0 Get all of the continent bonuses available in a single campaign	30
Beginner's Luck 0 Beat a mission in June or later using only Rookies	30
Brutal Collection 0 Skulljack each different type of ADVENT soldier (does not have to be in same game)	30
With Extreme Prejudice 0 Skulljack an ADVENT Officer	10
A Better Human Being 0 Recover the Forge Item	10
A Final Stand 0 Create the Commander's Avatar	10
Harder, Better, Faster, Stronger 0 Apply a PCS upgrade to a soldier	10
Now Am I Become Death 0 Kill 3 enemies in a single turn, with a single soldier, without explosives	15
Valhalla 0 Beat the game on Commander+ difficulty in Ironman mode	50

XCOM 2 - Alien Hunters

There are 10 achievements with a total of 195 points.

Forbidden Experiment 0 Investigate the Abandoned Research Facility	20
Viper Vanquisher 0 Kill the Viper Ruler	15
Berserker Breaker 0 Kill the Berserker Ruler	15
Archon Annihilator 0 Kill the Archon Ruler	15
Kingslayer 0 Kill all three alien rulers in a single game	20
Deadly Arsenal 0 Purchase all of the final tier hunter weapons	20
Regicide 0 Kill an alien ruler the first time you encounter it	30
Now I am the Master 0 Use all ruler armor abilities in a single mission	20
Enemy Adopted 0 Use a ruler armor ability against an alien ruler	20
Not throwing away my shot 0 Kill an alien ruler while it attempts to escape	20

XCOM 2 - Shen's Last Gift

There are 10 achievements with a total of 160 points.

A Torch Passed 0 Beat the Lost Towers mission	20
Our New Overlords 0 Promote a SPARK unit to Champion rank	15
Rise of the Robots 0 Complete a mission with three or more SPARK units in the squad	15
Matter Over Mind 0 Defeat an Avatar with a SPARK unit	20
Running on Fumes 0 A SPARK unit survives a mission it started with less than half health	15
Bells and Whistles 0 Outfit a SPARK unit with the highest tier weaponry and armor	15
Always Be Shooting 0 Hit three shots on a single turn with a SPARK unit after using its Overdrive ability	15
Axles to Axles, Bolts to Bolts 0 Defeat a robotic enemy with a SPARK unit	15
Just Like Dad used to make 0 Build a SPARK unit	10
Make 'em go Boom 0 Kill an enemy primed Derelict MEC before it can self-destruct	20

XCOM 2 - War of the Chosen

There are 10 achievements with a total of 170 points.

A New Alliance 0 Complete the Lost and Abandoned mission	10
A Rival Silenced 0 Permanently defeat one of the Chosen	20
Zombies in a Barrel 0 Get 15 Headshots against Lost in a single turn	10
Born in the Darkness 0 Get four kills from Shadow mode with a Reaper in a single mission	10
Circle of Psi 0 Raise a Templar to maximum Focus level, spend it all, and reach the max again in a single mission	20
Can't Stop the Fighting 0 Perform three offensive actions against the same target with a Skirmisher in a single turn	15
It Takes Two 0 Form a level 3 bond between two soldiers	20
Weary Warriors 0 Complete a mission with all Tired soldiers and no casualties	20
Fully Operational Resistance 0 Raise XCOM's influence with all three factions to High in a single game	30
No One Left Behind 0 Rescue a soldier who was captured by the Chosen	15