Successfully use Detect Thoughts to pry into someone's thoughts.

Take control of the Nautiloid and escape the hells.

Add a Circuit to a Weapon.

Survive your first spacewalk.

Complete the game on any difficulty setting

Destroy the Marker

Kill 50 enemies using the Flamethrower

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

Purchase the Advanced Suit

Snare the Shard with the Ishimura

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

Destroy the Tripod Nest

Complete the Solar Array Puzzle