Get your first Suit

Survive the Train Sequence

Get through the first Zero-G area

Survive your first encounter with Stalkers

Kill the Tormenter

Win the fight at the School

Knock off every Tripod during the Elevator Sequence

Defeat the AI

Complete the Solar Array Puzzle

Destroy the Tripod Nest

Snare the Shard with the Ishimura

Complete the Drill Ride

Destroy the Marker

Survive the Eye Poke Machine

Complete the game on any difficulty setting

Stomp 10 Containers

Decompress 20 Necromorphs without getting sucked out yourself

Kill 25 crawling enemies with Stomp (single player only)

Kill 30 Necromorphs with Kinesis objects

Kill 30 Crawlers without detonating them

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

Use Quick Heal ten times (single player only)

Purchase the Advanced Suit

Upgrade your RIG and Stasis completely

Upgrade 1 Weapon completely

Simultaneously have four completely upgraded weapons

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

Dismember the Lightspeed Boy Statue

Collect 100 logs

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

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

Kill 4 enemies with the same Ripper blade

Kill 20 enemies with Detonator Mines in a deployed state

Kill 50 enemies using the Flamethrower

Kill a Stalker with the Seeker Rifle while in Zoom Mode

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

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

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

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

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

Kill a Brute without taking damage

Dismember 25 Necromorph Limbs (single player only)

Kill a Cyst by catching its Mine and throwing it back