Found a 'Gangsters of the United States' cigarette card

Completed "An Offer You Can't Refuse"

Return the Hammer of the Rebellion

All Left Behind collectibles found

Complete all Stunt Jumps.

Played Jak X Combat Racing

Win the water gun fight

Earn any 70 Gold Medals on Missions, Strangers and Freaks.

Complete the game on Hard

Collect and return all spaceship parts.

Found all collectibles

Collect all comics