Complete the game on Zealot setting
Decompress 20 Necromorphs without getting sucked out yourself
Complete the game on Hard Core setting
Complete the game on any difficulty setting
Dismember 2,500 Necromorph Limbs (single player only)
Simultaneously have four completely upgraded weapons
Kill 30 Crawlers without detonating them
Purchase the Advanced Suit
Collect 100 logs
Upgrade your RIG and Stasis completely
Kill 50 enemies using the Flamethrower
Kill 50 Necromorphs while they are in Stasis (single player only)
Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up
Kill a Necromorph with every Weapon in the game (single player only).
Kill 20 enemies with Detonator Mines in a deployed state
Collect 10 Semiconductors
Find the Peng treasure
Upgrade 1 Weapon completely
Kill a Brute without taking damage
Kill 30 Necromorphs with Kinesis objects
Kill a Stalker with the Seeker Rifle while in Zoom Mode
Kill a Cyst by catching its Mine and throwing it back
Collect 10 Schematics
Kill 4 enemies with the same Ripper blade
Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only)
Kill 25 crawling enemies with Stomp (single player only)
Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only)
Impale an enemy into a Decompression Window to cause it to blow out
Dismember the Lightspeed Boy Statue
Use Quick Heal ten times (single player only)
Kill 6 enemies at once with Line Gun's Alt-Fire (single player only)
Stomp 10 Containers
Impale an enemy and make him fly through the air for 17 meters - it must stick to the surface
Dismember 25 Necromorph Limbs (single player only)
TK Impale a live Slasher to a surface using a Slasher's arm - it must stick to the surface
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