Here is the list of unlockable items in CoD4 (Call of Duty 4 via weapon challenges and such): 1 All Starting Equipment 2 Demolitions Class (Shotgun) 3 Sniper Class (Sniper Rifle) 4 CREATE A CLASS 5 Gun Challenges 6 New Playlists 7 M40 (Sniper Rifle) 8 Last Stand (Perk 3) 9 Boot Camp Challenges pt …