Kill 10 enemies with headshots

Pull over while the police are in 'pull over' mode, then drive away during the ticketing cutscene.

Win 5 races in a row offline.

Complete one of the missions you receive in the mission log.

Travel to an incredible height

Complete a level online with 3 other players who are not on your friends list

Collect 1,000,000 points over all levels you have played

Complete a level with more than one player

Get an 8X Multiplier

Complete a community level

Choose a costume for your sackperson with at least one item on your head, at least one item on your body, and a material

Place a sticker