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

Kill 100 enemies with Mr. Zurkon out.

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

Kill 15 enemies while using the Cloaker.

Kill eight enemies with one shot.

Fully upgrade all weapons.

Blow up 85% of the exploding crates in Aldaros Plains.

Escape the Polar Sea.

Use only Reflectors to destroy the generators in Phonica Moon's security tunnels. (2P +)

Complete Terawatt Forest.

Buy half of the weapons.

Use the Co-op overload to kill 60 enemies.