- Multiplayer mode weapons
Achieve the indicated rank or earn the indicated badge in Multiplayer mode to unlock the corresponding weapon in Multiplayer mode:

EPDD	Elite Hand to Hand Combat badge
Trip Bar and Ramat (HMGs/ARs)	Rank T3
Double Sawn-Offs (Pistol)	Elite One-Handed Skill badge
M60 E-3 and Chinese Type-56 (HMGs)	Rank O1
MDS A3 and Spectre (Full Auto SMGs)	Rank R1
AR-15 and Draugonov (Snipers)	Rank T2
EMP Grenades	Expert Explosive Expertise badge
MDS-7 and Ripper (SMGs in pistol slot)	Rank T1
33 SC-1 and SG-76 H-Bar (Snipers)	Rank R2
Laser Mines	Elite Gadget Expertise badge
Desert Sniper .357 and SP-57 (Pistols)	Rank O3
Claymore Mines	Expert Gadget Expertise badge
M16K and Galil (ARs, Full Auto)	Rank O2
M67 Grenades	Elite Explosive Expertise badge
Shot Defender and SPA-12 (Shotguns)	Rank R3
USAS-12 and Sawed Off (Shotguns)	Rank 04

- M16A2 weapon
Destroy five DU containers in Mission 4-2 in Single Player mode to unlock the M16A2 in Mission mode.

- Shot Defender weapon
Successfully complete the 'Sana Yemen' mission with a time less than 3:40 to unlock the Shot Defender weapon.

- R1 multiplayer rank
Get 70 kills in Multiplayer mode to get an R1 rank.

- Goodnight, Sweetheart bonus mission
Clear all the time limits in all Training missions to unlock the 'Goodnight, Sweetheart' bonus mission.

- SP57 weapon
Successfully complete Training Mission 1 in Single Player mode with a time less than 1:35 to unlock the SP57 weapon. To do this, go halfway through the mission until you reach the point where you must use the night vision goggles to find the code and unlock the door. Once you reach this point after crawling through the crawl space, turn right and climb over the crate. Go forward until you fall off, and there will be a crate directly on your right. Climb it and there will be a zip-line that will take you to the end of the mission.

- AK-47 weapon
Successfully complete the Headshots goal in Mission 6-1 to unlock the AK-47 in Mission mode.

- Jimmy Zhou's Army bonus mission
Successfully complete the 'Birds Of A Feather' bonus mission to unlock the 'Jimmy Zhou's Army' bonus mission.

- M1 Super 90 weapon
Destroy five DU containers in Mission 4-1 in Single Player mode to unlock the M1 Super 90 in Mission mode.

- M4 Silenced weapon
Get 10 headshots in Mission 7-1 on the Hard difficulty setting to unlock the M4 Silenced in Mission mode.

- SMAW rocket launcher weapon
Shoot all the small warheads in Mission 4-3 to unlock the SMAW rocket launcher in Mission mode.

- Trapped In The Hornets Nest bonus mission
Get all 'Combat Sharp Shooter' patches to unlock the 'Trapped In The Hornets Nest' bonus mission.

- M4 Carbine weapon
Destroy five DU containers in Mission 4-3 in Single Player mode to unlock the M4 Carbine in Mission mode.

- FAMAS weapon
Successfully complete Training Mission 2 in Single Player mode with a time less than 3:00 to unlock the FAMAS weapon.

- M249 SAW weapon
Successfully complete the 'KemSynth Tower' mission with a time less than 2:45 to unlock M249 SAW weapon.

- Birds Of A Feather bonus mission
Successfully complete Story mode on the Normal or Hard difficulty setting to unlock the 'Birds Of A Feather' bonus mission.

- UNP.45 weapon
Successfully complete Training Mission 3 in Single Player mode without wasting a shot to unlock the UNP.45 weapon.

- Up A Column Without A Paddle bonus mission
Get all 'Elite Weapons Expert' patches to unlock the 'Up A Column Without A Paddle' bonus mission.