Here is the full list of all 40 XCOM: Chimera Squad achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Replace an Agent mid-mission with an Android.
Complete a mission with only one Agent left standing.
Win the campaign on Impossible difficulty.
Complete all versions of each Faction’s Takedown mission over multiple campaigns.
Buy 20 unique Scavenger Market items in a single campaign.
Hack an enemy Android with Patchwork and trigger Self-Destruct.
Complete every Spec Op at least once in a single campaign.
Use every type of Breach point.
Kill an enemy with Axiom while Berserk.
Capture a Praetorian.
Use Zephyr to hit 3 or more enemies with one use of Crowd Control.
Use Claymore to detonate a Shrapnel Bomb with another explosive.
Use every Agent in at least one mission.
Complete a mission without killing a single enemy.
Complete an encounter by only dealing damage with melee attacks.
Clear an entire encounter during the Breach turn.
Win the campaign.
Launch a mission with no human agents in the squad.
Complete the Progeny Investigation.
Have Rank 3 Field Teams in all nine districts.
Fully upgrade an Android.
Use Verge to do 10 or more damage with one Mindflay.
Move a VIP with Shelter’s Relocate and Torque’s Tongue Pull.
Reach max rank with all Agents in a single campaign.
Complete 20 Assembly Projects in a single campaign.
As Godmother, activate Overtime and down an enemy on both turns.
Complete all of one Agent’s class training.
Relocate the same unit with Shelter and his ghost in one turn.
Complete an objective with an action from Terminal’s Cooperation.
Capture a Sorcerer.
Use Blueblood to hit 3 or more enemies with one Phase Lance shot.
Complete the Gray Phoenix Investigation.
Use Torque to Tongue Pull an enemy into poison.
Have Kinetic Armor on all 4 squad members at once.
Have 8 Agents in the squad in a single campaign.
Equip an Epic Weapon.
Complete the Sacred Coil Investigation.
Unlock all Field Abilities.
Capture a Ronin.
Complete the tutorial.