Destroy 25 Droids by Jumping from Droid to Droid

Destroy 50 Droids with a mounted Force Kill

Buy a Hat or Mask

Get over 250 points while controlling a single droid

Collect an Artifact

Destroy a Gold Droid

Finish a mission with another Player

Perform a Droid-Jak at the same time as your partner

You have unlocked a rumor.

Complete a level on Regular difficulty or higher using only melee or grenades. (Solo only)

Save the soldier before he burns to death.

Earn the Designated Driver medal while playing Interdiction. (“Interdiction” downloadable content)