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Heroes Campaign
Co-Op Campaign: Complete all areas on Hard difficulty with the help of a friend.
30 
Fearless
Single Player: Complete 3 sequential areas on foot: Medium or Hard difficulty in one session.
20 
Wonder twins
Zone Battle: Use all 4 Co-Op attacks, kill 10 units with each: Medium or Hard in one session.
20 
Zoned Out
Zone Battle: Complete 6 Zones, each with the help of a different LIVE enabled friend.
20 
Escapist
Zone Battle: Defeat all spaceships in Areas 29 & 30: Medium or Hard difficulty in one session.
20 
Smoothie Heroes
Co-op Campaign: Kill 100 infantry, one player freezes & the other shatters, on Hard in one session.
20 
Underground Hunters
Co-Op Campaign: Finish all underground areas with the help of a friend: Medium or Hard difficulty.
20 
Moby Dick
Single Player: Destroy the Mecha Orca.
10 
Hot-wired
Single Player: Capture all 3 hijackable vehicles at least once.
10 
Pyromaniac
Single Player: Burn 50% of infantry in any Zone: Medium or Hard difficulty in one session.
10 
Ice Cold
Single Player: Freeze 50% of infantry in any Zone: Medium or Hard difficulty in one session.
10 
Assault Flags
Single Player: Collect all of the Flags scattered throughout the game.
10