Lockster-

Blinded By the Fright In Shangri-La, kill a Shrieker zombie while blinded by it.

Ensemble Cast In Call of the Dead, send the crew to Paradise in co-op.

Salem Asylum Prison Nightmare - Get to the train in less that 4:44 on Mayhem or above.

Becoming Mean Reach the tenth level of infamy.

Stuntman In Call of the Dead, make a zombie explode using the V-R11.

One Small Hack for a Man... In Moon, hack something.

A Long Night of Horrors Prison Nightmare - Get at least 15 keycards on Mayhem or above and do not go in to custody.

What? You Want Me to Dance? Scarface Mansion - Finish the heist on stealth in 13 minutes or less on Mayhem or above.

Shooting on Location In Call of the Dead, kill 10 zombies with one Scavenger shot from over 100 feet away.

Spaaaaaaaaace Go where no surgeon has gone before.

In Space, No One Can Hear You Bleed Perform a heart transplant in space.

Join the Team Beat all 28 developer best lap times in career

Half-baked puzzle Find the cake in "Test Chamber"

Full steam ahead Complete "Steampunk Party"

Test Complete Complete "Test Chamber"

Small Consolation In Shangri-La, use the 31-79 JGb215 on each type of zombie.

Need to vent Go through all the ventilation shafts in "Test Chamber"

Party Animal Start the party in "Steampunk Party"

Let off some steam Find and turn the hidden valves in "Steampunk Party"

Time Travel Will Tell In Shangri-La, acquire the focusing stone.

Fully Armed and Operational In Moon, acquire 3 pack-a-punched weapons at the same time.

Elite Hunter Beat all the Elite racers in the grudge matches

Becoming Monstrous Reach the twenty fifth level of infamy.

Cryogenic Slumber Party In Moon, complete Richtofen's grand scheme.

Perks in Spaaaaace! In Moon, purchase every perk in one game.

Enter The Code I'm not sure that was worth it...

Screw The Prime Directive Reveal your next patient.

Level of Merit Complete all the career challenges

Valley Black clear Complete all Black Valley maps (Any medal)

End of the Road? Get a gold medal on every track of the solo campaign

Lagoon Black clear Complete all Black Lagoon maps (Any medal)

Big Bang Theory In Moon, gain sweet, sweet, revenge.

Black Series clear Get a silver medal on every black track

Stadium Black clear Complete all Black Stadium maps (Any medal)

Trackmaster Who's the TrackMaster? You!

Practically Licensed Complete all procedures.

One Giant Leap In Moon, become trapped in the Receiving Area and free yourself through resurrection in co-op.

I Have No Idea What I'm Doing Smash all canisters within 10 seconds.

We're Going On An Adventure! Take your radio with you.

Ground Control In Moon, prevent each excavator from breaching the base in one game.

Nothing But Skull Complete a brain transplant by throwing it in.

You're the disease, I'm the cure Finish the Ironbro campaign

Total Awareness Unlock all songs.

First Success Complete an alien organ transplant.

Brainstorm Perform a brain transplant in an ambulance in under 1 minute 30 seconds.

Blink And You'll Miss It Perform an eye transplant in under 2 minutes and 30 seconds.

Back in Time For Tee Play a full game of Peaceful Pines on Classic

Life's Too Short Perform a heart transplant in an ambulance in under 1 minutes 40 seconds.

Ruins or Rink? Play a full game of Peaceful Pines on Hockey

Folly-oop Play a full game of Peaceful Pines on Dunk