Accomplish the indicated achievement to get the corresponding number of Gamerscore points:
| Unlockable: | How to unlock: |
| Mission Impossible (50 points) | Complete the game on Zealot setting. |
| Romper Stomper (25 points) | Stomp 10 Containers. |
| Vacuum Cleaner (30 points) | Decompress 20 Necromorphs without getting sucked out yourself. |
| Made Us Whole (10 points) | Complete the game on any difficulty setting. |
| Frozen in Time (10 points) | Kill 50 Necromorphs while they are in Stasis (single player only). |
| First Aid (10 points) | Use Quick Heal ten times (single player only). |
| Epic Dismemberment (50 points) | Dismember 2,500 Necromorph Limbs (single player only). |
| ...And Stay Down (10 points) | Kill 25 crawling enemies with Stomp (single player only). |
| Think Fast (15 points) | Kill 30 Necromorphs with Kinesis objects. |
| The Nanny (10 points) | Kill 30 Crawlers without detonating them. |
| C-Section (10 points) | Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up. |
| Going for Distance (20 points) | Impale an enemy and make him fly through the air for 17 meters - it must stick to the surface. |
| Taste of your own Medicine (20 points) | TK Impale a live Slasher to a surface using a Slasher's arm - it must stick to the surface. |
| It's a Trap! (20 points) | Kill 20 enemies with Detonator Mines in a deployed state. |
| Necro Flamb� (10 points) | Kill 50 enemies using the Flamethrower. |
| Peek a Boo! (20 points) | Kill a Stalker with the Seeker Rifle while in Zoom Mode. |
| Brute Juke (10 points) | Kill a Brute without taking damage. |
| Shoot the Limbs! (10 points) | Dismember 25 Necromorph Limbs (single player only). |
| Bouncing Betty (10 points) | Kill a Cyst by catching its Mine and throwing it back. |
| Skewered in Space (15 points) | Impale an enemy into a Decompression Window to cause it to blow out. |
| Hard to the Core (50 points) | Complete the game on Hard Core setting. |
| Clean Cut (10 points) | Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only). |
| Lawnmower Man (10 points) | Kill 4 enemies with the same Ripper blade. |
| Fully Loaded (50 points) | Simultaneously have four completely upgraded weapons. |
| The Sampler Platter (20 points) | Kill a Necromorph with every Weapon in the game (single player only).. |
| Lightspeed de Milo (10 points) | Dismember the Lightspeed Boy Statue. |
| Looking good (10 points) | Purchase the Advanced Suit. |
| Fully Outfitted (30 points) | Upgrade your RIG and Stasis completely. |
| Picking favorites (30 points) | Upgrade 1 Weapon completely. |
| The Engineer (10 points) | Collect 10 Schematics. |
| My Boom Stick (20 points) | Kill 6 enemies at once with Line Gun's Alt-Fire (single player only). |
| Shock Therapy (10 points) | Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only). |
| Collect Peng (20 points) | Find the Peng treasure. |
| The Librarian (10 points) | Collect 100 logs. |
| The Electrician (10 points) | Collect 10 Semiconductors. |
| The Fugitive (50 points) | Escape the Facility. |
| Cross your Heart, Hope to Die (30 points) | Survive the Eye Poke Machine. |
| The Final Sacrifice (50 points) | Destroy the Marker. |
| Clever Girls (10 points) | Survive your first encounter with Stalkers. |
| Torment Me No More (20 points) | Kill the Tormenter. |
| The Graduate (20 points) | Win the fight at the School. |
| Patient on the Loose (15 points) | Get your first Suit. |
| Derailed (20 points) | Survive the Train Sequence. |
| One Small Step (10 points) | Get through the first Zero-G area. |
| Hornet's Nest (30 points) | Destroy the Tripod Nest. |
| Operation! (15 points) | Snare the Shard with the Ishimura. |
| Knock Knock (25 points) | Complete the Drill Ride. |
| Elevator Action (15 points) | Knock off every Tripod during the Elevator Sequence. |
| Shut Down (10 points) | Defeat the AI. |
| Powered Up (15 points) | Complete the Solar Array Puzzle. |
