Find 25% of GPS caches.

Kill 25 unaware enemies.

Complete one challenge.

Triggered Costume Break during a Quest. "Do we get stronger the more skin we show? Even if it helps us complete Quests, none of us really want to stay like this for long. CPUs have feelings too, y'know!"

Land a single blow in excess of 1,000 damage in single-player mode.

Discover a veilfire rune.

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

Complete the game (any difficulty)

Kill 10 Lycans

Kill 7 enemies with silent takedowns

Kill 40 enemies with science weapons

Kill 25 enemies without aiming