GG Bridge

In Mob of the Dead, survive an entire round on the bridge on round 15 or higher.

No One Escapes Alive

In Mob of the Dead, execute the escape plan.

Paranormal Progress

In Mob of the Dead, open a door without spending points.

Pop Goes the Weasel

In Mob of the Dead, break the cycle.

Feed the Beast

In Mob of the Dead, obtain Hell's Retriever.

Slippery When Undead

In Die Rise, kill 5 zombies with a single shot from the Sliquifier.

Mad Without Power

In Die Rise, reach round 10 before turning on the power.

Little Lost Girl

In Origins, release Samantha.

Playing with Power

In Origins, build all elemental staffs in one game.

Not a Gold Digger

In Origins, share a weapon you dug up.

Mined Games

In Buried, be their pawn.

Death From Below

In Buried, drop the beat on 10 zombies in one game.

The Lights Of Their Eyes

In Green Run, pacify at least 10 zombies with 1 EMP.

Fuel Efficient

In TranZit, use an alternative mode of transportation.

I Don't Think They Exist

In TranZit, kill one of the denizens of the forest while it is latched onto you.

Dance On My Grave

In Green Run, acquire your Tombstone.

Ectoplasmic Residue

In Buried, acquire a perk for free.

When the Revolution Comes

In Buried, return to processing.

Revisionist Historian

In Buried, rewrite history.

Candygram

In Buried, make a candy delivery.

Overachiever

In Origins, complete all 4 Challenges in one game.

All Your Base

In Origins, activate all generators without allowing one to stop.