d-nidal

You call this archaeology? Applied an elemental artifact

Finally Grow A Pair Complete Chapter 5: "Emergency Care"

Made Us Whole Complete the game on any difficulty setting

The Fugitive Escape the Facility

The Final Sacrifice Destroy the Marker

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

Fully Outfitted Upgrade your RIG and Stasis completely

Cross your Heart, Hope to Die Survive the Eye Poke Machine

Picking favorites Upgrade 1 Weapon completely

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

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

Knock Knock Complete the Drill Ride

Looking good Purchase the Advanced Suit

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

The Librarian Collect 100 logs

Quit Yacking And Start Shooting Complete Chapter 4: "Rendezvous with Fate"

Twice The Firepower Play cooperatively with a second player

Operation! Snare the Shard with the Ishimura

...And Stay Down Kill 25 crawling enemies with Stomp (single player only)

Brute Juke Kill a Brute without taking damage

Hornet's Nest Destroy the Tripod Nest

The Electrician Collect 10 Semiconductors

Powered Up Complete the Solar Array Puzzle

Shut Down Defeat the AI

The Graduate Win the fight at the School

The Engineer Collect 10 Schematics

Torment Me No More Kill the Tormenter

Clever Girls Survive your first encounter with Stalkers

One Small Step Get through the first Zero-G area

Romper Stomper Stomp 10 Containers

Derailed Survive the Train Sequence

First Aid Use Quick Heal ten times (single player only)

Taking Your Time, McNeill? Admire the view in the crashed shuttle

Rising Star Earn 10 stars on one profile

Figments Of My Imagination Complete Chapter 3: "Return to the Megavents"

What Did You Find? Take a minor detour in the megavents

Patient on the Loose Get your first Suit

Shoot the Limbs! Dismember 25 Necromorph Limbs (single player only)

Taste of your own Medicine TK Impale a live Slasher to a surface using a Slasher's arm - it must stick to the surface

Skill - Stasis Complete any level with at least 80% Stasis Accuracy

That's Quite A Mouthful Complete Chapter 2: "Another Day at the Office"

It Needs Our Help Complete Chapter 1: "Worlds Apart"