Complete the game on Zealot setting

Unlocked: 28 Feb 2011 05:05:12

Impale an enemy and make him fly through the air for 17 meters - it must stick to the surface

Unlocked: 27 Feb 2011 21:27:58

Dismember 2,500 Necromorph Limbs (single player only)

Unlocked: 26 Feb 2011 22:00:16

Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up

Unlocked: 26 Feb 2011 21:17:30

Decompress 20 Necromorphs without getting sucked out yourself

Unlocked: 26 Feb 2011 21:14:38

Kill 50 enemies using the Flamethrower

Unlocked: 26 Feb 2011 02:57:23

Kill a Stalker with the Seeker Rifle while in Zoom Mode

Unlocked: 26 Feb 2011 02:45:38

Kill a Necromorph with every Weapon in the game (single player only).

Unlocked: 26 Feb 2011 02:30:58

Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only)

Unlocked: 25 Feb 2011 21:44:05

Kill 6 enemies at once with Line Gun's Alt-Fire (single player only)

Unlocked: 25 Feb 2011 21:28:25

Kill 20 enemies with Detonator Mines in a deployed state

Unlocked: 25 Feb 2011 21:18:53

Kill 4 enemies with the same Ripper blade

Unlocked: 25 Feb 2011 21:00:06

Complete the game on any difficulty setting

Unlocked: 25 Feb 2011 18:45:36

Escape the Facility

Unlocked: 25 Feb 2011 18:45:35

Destroy the Marker

Unlocked: 25 Feb 2011 18:42:23

Simultaneously have four completely upgraded weapons

Unlocked: 25 Feb 2011 18:30:32

Upgrade 1 Weapon completely

Unlocked: 25 Feb 2011 15:41:06

Upgrade your RIG and Stasis completely

Unlocked: 25 Feb 2011 15:32:17

Survive the Eye Poke Machine

Unlocked: 25 Feb 2011 04:14:34

Complete the Drill Ride

Unlocked: 24 Feb 2011 20:52:03

Kill 30 Necromorphs with Kinesis objects

Unlocked: 24 Feb 2011 20:49:25

Purchase the Advanced Suit

Unlocked: 24 Feb 2011 20:36:10

Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only)

Unlocked: 24 Feb 2011 19:49:54

Kill 30 Crawlers without detonating them

Unlocked: 24 Feb 2011 19:41:01

Snare the Shard with the Ishimura

Unlocked: 24 Feb 2011 19:31:33

Collect 100 logs

Unlocked: 24 Feb 2011 18:47:20

Destroy the Tripod Nest

Unlocked: 24 Feb 2011 03:54:48

Kill 50 Necromorphs while they are in Stasis (single player only)

Unlocked: 23 Feb 2011 17:09:32

Complete the Solar Array Puzzle

Unlocked: 23 Feb 2011 04:09:59

Defeat the AI

Unlocked: 23 Feb 2011 03:58:20

TK Impale a live Slasher to a surface using a Slasher's arm - it must stick to the surface

Unlocked: 23 Feb 2011 03:57:00

Collect 10 Semiconductors

Unlocked: 23 Feb 2011 03:50:41

Find the Peng treasure

Unlocked: 23 Feb 2011 03:49:44

Knock off every Tripod during the Elevator Sequence

Unlocked: 23 Feb 2011 03:20:15

Kill a Brute without taking damage

Unlocked: 22 Feb 2011 19:14:30

Win the fight at the School

Unlocked: 05 Feb 2011 03:11:26

Kill a Cyst by catching its Mine and throwing it back

Unlocked: 05 Feb 2011 02:53:22

Collect 10 Schematics

Unlocked: 05 Feb 2011 02:02:05

Kill the Tormenter

Unlocked: 05 Feb 2011 01:51:14

Kill 25 crawling enemies with Stomp (single player only)

Unlocked: 05 Feb 2011 01:23:02

Survive your first encounter with Stalkers

Unlocked: 05 Feb 2011 01:08:02

Get through the first Zero-G area

Unlocked: 04 Feb 2011 20:50:27

Impale an enemy into a Decompression Window to cause it to blow out

Unlocked: 04 Feb 2011 20:37:55

Dismember the Lightspeed Boy Statue

Unlocked: 04 Feb 2011 20:28:02

Survive the Train Sequence

Unlocked: 04 Feb 2011 20:16:50

Use Quick Heal ten times (single player only)

Unlocked: 04 Feb 2011 20:13:29

Stomp 10 Containers

Unlocked: 04 Feb 2011 19:55:26

Get your first Suit

Unlocked: 03 Feb 2011 01:48:24

Dismember 25 Necromorph Limbs (single player only)

Unlocked: 03 Feb 2011 01:22:33

Complete the game on Hard Core setting

Severed: Complete Chapter 1

Severed: Complete Chapter 2

Severed: Take out the gunship within 30 seconds

Severed: Complete on Zealot difficulty

Severed: Kill 16 or more enemies in the final last stand combat sequence

Severed: Find the Peng treasure in Severed

Severed: Defend the quarry platform until the door unlocks

Severed: In the grinder room, cause an enemy to die in the grinders