Full list of all 50 Dead Space 2 (DE) achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
Complete the game on Hard Core setting
Complete the game on Zealot setting
Dismember 2,500 Necromorph Limbs (single player only)
Simultaneously have four completely upgraded weapons
Kill 30 Crawlers without detonating them
Upgrade 1 Weapon completely
Upgrade your RIG and Stasis completely
Decompress 20 Necromorphs without getting sucked out yourself
Escape the Facility
Complete the game on any difficulty setting
Destroy the Marker
Survive the Eye Poke Machine
Complete the Drill Ride
Purchase the Advanced Suit
Kill 25 crawling enemies with Stomp (single player only)
Snare the Shard with the Ishimura
Collect 100 logs
Destroy the Tripod Nest
Kill 50 enemies using the Flamethrower
Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up
Find the Peng treasure
Kill a Necromorph with every Weapon in the game (single player only).
Kill 20 enemies with Detonator Mines in a deployed state
Complete the Solar Array Puzzle
Defeat the AI
Knock off every Tripod during the Elevator Sequence
Kill 50 Necromorphs while they are in Stasis (single player only)
Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only)
Collect 10 Semiconductors
Kill a Brute without taking damage
Win the fight at the School
Kill 4 enemies with the same Ripper blade
Kill 6 enemies at once with Line Gun's Alt-Fire (single player only)
Collect 10 Schematics
Kill 30 Necromorphs with Kinesis objects
Kill a Stalker with the Seeker Rifle while in Zoom Mode
TK Impale a live Slasher to a surface using a Slasher's arm - it must stick to the surface
Impale an enemy and make him fly through the air for 17 meters - it must stick to the surface
Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only)
Kill a Cyst by catching its Mine and throwing it back
Impale an enemy into a Decompression Window to cause it to blow out
Kill the Tormenter
Survive your first encounter with Stalkers
Get through the first Zero-G area
Dismember the Lightspeed Boy Statue
Survive the Train Sequence
Stomp 10 Containers
Use Quick Heal ten times (single player only)
Get your first Suit
Dismember 25 Necromorph Limbs (single player only)