Upgrade any ability once in single-player mode.

Trigger a cross-class combo with a character you control in single-player mode.

Buy your first Attribute or Spell Point

Die for the first time

Set 5 enemies on fire and then kill them with explosives.

Customize 25 weapons.

Finish the game

Enter the docks in Quarantine Zone

Survive the horde on the roof

Finish hospital quests for Cecil

Gain access to a long-range radio station

Finish quests for Dr. Kessler

Reach Henderson