Full list of all 46 Aliens: Fireteam Elite achievements.
The base game contains 42 achievements, and there is 1 DLC pack containing 4 achievements.
Kill 1000 enemies with fire.
Eliminate 1000 Synthetics.
Eliminate 10000 Xenomorphs.
Kill 50 enemies with explosive barrels or pods.
Complete 25 successful Challenge runs.
Level a Kit to Rank 8.
Fill every slot in a perk board.
Complete a mission on Intense Difficulty or above without anyone taking friendly fire damage.
Finish a mission on Intense Difficulty.
Collect one attachment of every type.
Finish the "Only Way to be Sure" Campaign.
Finish all Campaigns on Standard Difficulty.
Get grappled five times in the same mission.
Collect 25 attachments.
Eliminate 300 Pathogen.
Finish the "Gift of Fire" Campaign.
Level a weapon to four stars.
Finish the "Giants in the Earth" Campaign.
Equip three attachments on a single weapon.
Change your hat and outfit.
Finish the "Priority One" Campaign.
Do a successful Challenge run.
Equip a colorway and decal onto a gun.
Finish a mission on Extreme Difficulty.
Finish a mission on Insane Difficulty.
Finish all Campaigns on Intense Difficulty.
Finish all Campaigns on Extreme Difficulty.
Finish all Campaigns on Insane Difficulty.
Return 39 pieces of intel.
Open 50 hidden caches.
Level five Kits to Rank 8.
Level 30 weapons to four stars.
Eliminate 2000 elite enemies.
Kill 1000 enemies with electricity.
Collect 20 emotes.
Collect 20 hats.
Collect 40 decals.
Collect 40 colorways.
Use 500 consumables.
Complete 50 missions without anyone being downed.
Complete a mission without using aid kits, ammo crates, or consumables.
Heal your fireteam with an aid kit 100 times.