Killed 25 enemies with shock weapons

Completed 15 missions in co-op

Release all of the names to the sky.

Kill 3 enemies with one bomb

Earn the top score objective in any level

Catch Totec with the grapple while he is jumping over a death fall

Complete any level-specific Reward Challenge

Complete any campaign within 120 seconds.

Complete Corinth River on any difficulty level

Kill 3 monsters with a single physical object drop or throw

Kill at least 5 monsters in 3 seconds

Collect 900 Light Seeds.