Earn "I Dare Ya!" on Catacrom Four

Fully upgrade all weapons.

Get through the laser walls at the end of Uzo City in 45 seconds.

Escape the Polar Sea.

Kill 15 enemies while using the Cloaker.

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

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

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

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

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

Destroy 30 enemies while they're distracted by the Doppelbanger.

Buy all of the weapons.

Use the Co-op overload to kill 60 enemies.