Complete all of the stunts on the stunt list.

Reach full negative Karma.

Purchase every negative Karma upgrade for each power.

Finish story mode on Hard, without changing the difficulty setting.

Defeat Scorpion in the city

Complete all XTreme Race challenges

Destroy a Seeker before it can call a Hunter

Clear all car chases

Rescue all infected civilians

Unlock all concept art

Defeat 1000 enemies

Defeat Lizard