Play Co-Op mode for 5 minutes
Upgrade all weapons
Earn 15,000 dollars
Complete the game on hardcode difficulty
Complete the game on any difficulty
Find all the collectables
Kill 3,000 enemies in total
Use all special ammo and weapons
Destroy 5 ground enemies with your aircraft
Find 5 collectables
Complete a vehicle minigame without getting hit
Complete Mission 01
Kill 20 enemies with grenades
Kill 6 enemies with a single grenade
Melee kill 10 enemies
Kill 150 enemies
Upgrade a weapon
Destroy 50 vehicles
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