Clear all of the lessons in the Tutorial.

Clear one lesson in the Tutorial.

Wield the knife in single player or co-op mode.

Got Doc's Notebook back from Biff

Defeat a monster in combat with a friend by your side.

Upgrade your first weapon of choice.

You convinced Wayne Haas to let you into the morgue.

You made it through an entire hostile area without so much as a squeak.

Perform your first Takedown. Civilians don't count, so be nice.

Killed another player while disguised

Destroyed Stahl's Cruiser and left the planet on any difficulty

Took over the controls of the Mobile Factory