Unlocked a Secret Factor.

Killed the 2 soldiers before the building fell on them in Uprising

Captured one flag while playing CTF

Make pact with Serpo

Finish quests for Dr. Kessler

Kill special enemies: Grenadier, Thug, Wrestler, Infected, Suicider, Screamer, Butcher, Floater.

Clear out the cinema

Install a total of 5 barricades during hub defense

Successfully defend the tunnel entrance

Kill 100 monsters with a kick

Find a boat for use in the jungle

Kill 30 enemies using melee strikes or a melee Weapon Part.

Kill the Snowbeast.