Beat a ghost you have recorded in time trial.

Complete Chapter 4

Stunned the enemy 1,000 times.

Every Gallery pickup collected

Give 50 bribes.

Finish 1st in 10 Domination Races without crashing or getting fragged.

Defeat the Griffin

Get 50 Retaliation Medals

Complete the game on Easy difficulty

Complete 10 challenges

Collect 22 Intel Items.

Defeat Chainblade in the Arena using only the wrench

Hit 3 opponents with a single set of viking shields.