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