In Classified, retrieve and equip the Project Skadi prototype

In Alpha Omega, unlock the Pack-a-Punch machine by round 5

In Alpha Omega, construct all Ray Guns in a single match

In Ancient Evil, impale 8 zombies with one charged attack from the Hand of Gaia

In Ancient Evil, incinerate 20 zombies with one channel attack from the Hand of Hemera

In Ancient Evil, drag 15 zombies to the underworld with one charged attack from the Hand of Charon

In Ancient Evil, fully reignite the Eternal Flame by round 15

In Blackout, unlock Battery, Ruin, Firebreak, Seraph, Nomad, Prophet, Ajax, Crash, Torque and Recon

In Dead of the Night, kill a Werewolf in the Library with a revolver

In Dead of the Night, use every crafting table

In Voyage of Despair, kill 50 zombies that are underwater in a single game

In Voyage of Despair, kill 9 zombies via Catalytic Detonations in a single game

In Dead of the Night, get bitten by a Crimson Nosferatu