Found the nuke

Protected Chaffin from the soldiers in the street in Operation Swordbreaker

Get all of the Trophies in the game.

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

Kill 15 enemies while using the Cloaker.

Absorb 500 shots with the Quantum Deflector.

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

Kill 15 enemies that have been slowed down by the Zoni Blaster.

Fully upgrade all weapons.

Play an online game.

Destroy all of the towers in Gorthon Crater.

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