Mission Impossible 50
Complete the game on Zealot setting (35)
Romper Stomper 25
Stomp 10 Containers (8)
Vacuum Cleaner 30
Decompress 20 Necromorphs without getting sucked out yourself (13)
Made Us Whole 10
Complete the game on any difficulty setting (12)
Frozen in Time 10
Kill 50 Necromorphs while they are in Stasis (single player only) (2)
First Aid 10
Use Quick Heal ten times (single player only) (1)
Epic Dismemberment 50
Dismember 2,500 Necromorph Limbs (single player only) (18)
...And Stay Down 10
Kill 25 crawling enemies with Stomp (single player only) (5)
Think Fast 15
Kill 30 Necromorphs with Kinesis objects (3)
The Nanny 10
Kill 30 Crawlers without detonating them (24)
C-Section 10
Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up (4)
Going for Distance 20
Impale an enemy and make him fly through the air for 17 meters - it must stick to the surface (15)
Taste of your own Medicine 20
TK Impale a live Slasher to a surface using a Slasher's arm - it must stick to the surface (5)
It's a Trap! 20
Kill 20 enemies with Detonator Mines in a deployed state (9)
Necro Flambé 10
Kill 50 enemies using the Flamethrower (9)
Peek a Boo! 20
Kill a Stalker with the Seeker Rifle while in Zoom Mode (4)
Brute Juke 10
Kill a Brute without taking damage (11)
Shoot the Limbs! 10
Dismember 25 Necromorph Limbs (single player only) (3)
Bouncing Betty 10
Kill a Cyst by catching its Mine and throwing it back (6)
Skewered in Space 15
Impale an enemy into a Decompression Window to cause it to blow out (5)
Hard to the Core 50
Complete the game on Hard Core setting (116)
Clean Cut 10
Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only) (11)
Lawnmower Man 10
Kill 4 enemies with the same Ripper blade (12)
Fully Loaded 50
Simultaneously have four completely upgraded weapons (5)
The Sampler Platter 20
Kill a Necromorph with every Weapon in the game (single player only). (5)
Lightspeed de Milo 10
Dismember the Lightspeed Boy Statue (5)
Looking good 10
Purchase the Advanced Suit (18)
Fully Outfitted 30
Upgrade your RIG and Stasis completely
Picking favorites 30
Upgrade 1 Weapon completely (2)
The Engineer 10
Collect 10 Schematics (1)
My Boom Stick 20
Kill 6 enemies at once with Line Gun's Alt-Fire (single player only) (12)
Shock Therapy 10
Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only) (4)
Collect Peng 20
Find the Peng treasure (27)
The Librarian 10
Collect 100 logs (3)
The Electrician 10
Collect 10 Semiconductors (1)

Secret Achievements

The Fugitive 50
Escape the Facility (6)
Cross your Heart, Hope to Die 30
Survive the Eye Poke Machine (13)
The Final Sacrifice 50
Destroy the Marker (4)
Clever Girls 10
Survive your first encounter with Stalkers (8)
Torment Me No More 20
Kill the Tormenter
The Graduate 20
Win the fight at the School (4)
Patient on the Loose 15
Get your first Suit (2)
Derailed 20
Survive the Train Sequence (2)
One Small Step 10
Get through the first Zero-G area
Hornet's Nest 30
Destroy the Tripod Nest (4)
Operation! 15
Snare the Shard with the Ishimura (7)
Knock Knock 25
Complete the Drill Ride
Elevator Action 15
Knock off every Tripod during the Elevator Sequence (36)
Shut Down 10
Defeat the AI (3)
Powered Up 15
Complete the Solar Array Puzzle (8)