Take 30 shots
Take 50 shots
Take 100 shots
Take 500 shots
Take 250 shots
Take 750 shots
Take 1000 shots
Take 2000 shots
Take 1500 shots
Take 3500 shots
Take 5000 shots
Unlock all weapons
Take 10000 shots
Get 100 grenade launcher shots and 20 grenade throws
Use the knife 50 times
Get 500 Rifle Shots
Try every scoped weapon
Collect all pistols
Unlock all rifles
Unlock all grenades
Unlock all heavy weapons
Fire 100 shots with each shotgun