The Final Sacrifice
Destroy the Marker
50 ✓ January 1st, 1753
The Fugitive
Escape the Facility
50 ✓ January 1st, 1753
Hornet's Nest
Destroy the Tripod Nest
30 ✓ January 1st, 1753
Cross your Heart, Hope to Die
Survive the Eye Poke Machine
30 ✓ January 1st, 1753
Picking favorites
Upgrade 1 Weapon completely
30 ✓ January 1st, 1753
Knock Knock
Complete the Drill Ride
25 ✓ January 1st, 1753
Romper Stomper
Stomp 10 Containers
25 ✓ February 6th, 2011
Derailed
Survive the Train Sequence
20 ✓ February 6th, 2011
Torment Me No More
Kill the Tormenter
20 ✓ February 8th, 2011
The Graduate
Win the fight at the School
20 ✓ January 1st, 1753
Collect Peng
Find the Peng treasure
20 ✓ January 1st, 1753
Peek a Boo!
Kill a Stalker with the Seeker Rifle while in Zoom Mode
20 ✓ January 1st, 1753
Going for Distance
Impale an enemy and make him fly through the air for 17 meters - it must stick to the surface
20 ✓ February 8th, 2011
Taste of your own Medicine
TK Impale a live Slasher to a surface using a Slasher's arm - it must stick to the surface
20 ✓ February 6th, 2011
Patient on the Loose
Get your first Suit
15 ✓ February 6th, 2011
Elevator Action
Knock off every Tripod during the Elevator Sequence
15 ✓ January 1st, 1753
Powered Up
Complete the Solar Array Puzzle
15 ✓ January 1st, 1753
Operation!
Snare the Shard with the Ishimura
15 ✓ February 14th, 2011
Think Fast
Kill 30 Necromorphs with Kinesis objects
15 ✓ February 8th, 2011
Skewered in Space
Impale an enemy into a Decompression Window to cause it to blow out
15 ✓ January 1st, 1753
One Small Step
Get through the first Zero-G area
10 ✓ February 6th, 2011
Clever Girls
Survive your first encounter with Stalkers
10 ✓ February 8th, 2011
Shut Down
Defeat the AI
10 ✓ January 1st, 1753
Made Us Whole
Complete the game on any difficulty setting
10 ✓ January 1st, 1753
First Aid
Use Quick Heal ten times (single player only)
10 ✓ February 6th, 2011
Looking good
Purchase the Advanced Suit
10 ✓ January 1st, 1753
Lightspeed de Milo
Dismember the Lightspeed Boy Statue
10 ✓ February 6th, 2011
The Librarian
Collect 100 logs
10 ✓ January 1st, 1753
The Electrician
Collect 10 Semiconductors
10 ✓ January 1st, 1753
The Engineer
Collect 10 Schematics
10 ✓ January 1st, 1753
Shock Therapy
Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only)
10 ✓ February 6th, 2011
Clean Cut
Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only)
10 ✓ January 1st, 1753
Brute Juke
Kill a Brute without taking damage
10 ✓ January 1st, 1753
Shoot the Limbs!
Dismember 25 Necromorph Limbs (single player only)
10 ✓ February 6th, 2011
Bouncing Betty
Kill a Cyst by catching its Mine and throwing it back
10 ✓ January 1st, 1753
Mission Impossible
Complete the game on Zealot setting
50 
Epic Dismemberment
Dismember 2,500 Necromorph Limbs (single player only)
50 
Fully Loaded
Simultaneously have four completely upgraded weapons
50 
Hard to the Core
Complete the game on Hard Core setting
50 
🔐 The Betrayal
Severed: Complete Chapter 1
50 
🔐 The Sacrifice
Severed: Complete Chapter 2
50 
The Veteran
Severed: Complete on Zealot difficulty
50 
Vacuum Cleaner
Decompress 20 Necromorphs without getting sucked out yourself
30 
Fully Outfitted
Upgrade your RIG and Stasis completely
30 
The Sampler Platter
Kill a Necromorph with every Weapon in the game (single player only).
20 
My Boom Stick
Kill 6 enemies at once with Line Gun's Alt-Fire (single player only)
20 
It's a Trap!
Kill 20 enemies with Detonator Mines in a deployed state
20 
🔐 Ship Shape
Severed: Take out the gunship within 30 seconds
20 
Remember the Alamo
Severed: Kill 16 or more enemies in the final last stand combat sequence
20 
Peng Me Again
Severed: Find the Peng treasure in Severed
20 
King of the Hill
Severed: Defend the quarry platform until the door unlocks
20 
Grind House
Severed: In the grinder room, cause an enemy to die in the grinders
20 
...And Stay Down
Kill 25 crawling enemies with Stomp (single player only)
10 
The Nanny
Kill 30 Crawlers without detonating them
10 
Frozen in Time
Kill 50 Necromorphs while they are in Stasis (single player only)
10 
Lawnmower Man
Kill 4 enemies with the same Ripper blade
10 
Necro Flambé
Kill 50 enemies using the Flamethrower
10 
C-Section
Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up
10