Revive a teammate with one second left on their timer. (2P +)

Kill eight enemies in eight seconds using the Darkstar Fission Tether with two or more teammates.

Kill 50 enemies in a row using melee without taking damage.

Get through Rossa Fields without using any of the energy repositories.

No one gets hit by a grove beetle in the Deadgrove.

Defeat the Loki Master.

Escape the Polar Sea.

Barbecue four enemies at the same time using the Pyro Blaster.

Use the Co-op overload to kill 60 enemies.

Kill 10 Lesser Devils with a melee weapon.

Kill 100 enemies with Mr. Zurkon out.

Defeat King Sepiad.

Defeat Commander Spog.