Kill Inferno's Sergeants in single player

Make it to the party as Mash.

Multi-kill -- 5 enemies with 1 Frag grenade.

Fight your way to the crashed Rok.

Kill 100 enemies.

Bounty Blisterz Booty

Shoot 10 Airborne Grenades

Complete Part I Of The Story

Reach the long version of the ending movie.

Attempt "The Rescue" and survive.

Kill an infected teammate with a headshot before they become a zombie in any mode.

Purchase 5 weapons.

Heal with 101 Green Herbs (lifetime)