Complete Act 3.

Kill 3 or more players in a standoff or showdown.

Complete Act 2 on Hard difficulty or above.

Level a weapon up to maximum operational capability.

Scan and acquire all weapons.

After taking control of the enemy transport in Act 2-2, do not let a single enemy escape.

Complete Act 1 on Hard difficulty or above.

Manually trigger AR Mode and destroy an enemy robot.

Destroy an incoming missile or grenade.

Destroy three enemy robots at once with one hand grenade.

Complete all instances of Naughty and Nice.

Complete ALL of the Challenges.