Completion bonuses. Complete a singler player game under the indicated difficulty level to unlock the corresponding weapon or item.
| Admiral difficulty. | IW-80 A2 | 
| Admiral difficulty. | STG 77 | 
| Captain difficulty. | GROM weapons | 
| Captain difficulty | Front Grip | 
| Captain difficulty | Medium Scope | 
| Commander difficulty | SBS weapons | 
| Ensign difficulty | SEAL weapons | 
| Lieutenant difficulty | Terrorist weapons | 
Bonus multiplayer characters. Fulfill the corresponding objective to unlock.
| Complete the training missions | KILLJOY | 
| North Africa: any difficulty | Al-Kamli Sarwat | 
| North Africa: Commander, Captain, or Admiral | SEAL Jungle Ghillie Suit | 
| North Africa: Commander, Captain, or Admiral. | Terrorist Jungle Ghillie Suit | 
| Poland: Commander, Captain, or Admiral. | SEAL Winter Ghillie Suit | 
| Poland: Commander, Captain, or Admiral | Terrorist Winter Ghillie Suit | 
| South Asia: any difficulty | CHOPPER | 
| South Asia: Captain or Admiral | Hari Raman | 
| South Asia: Commander, Captain, or Admiral | SEAL Desert Ghillie Suit | 
| South Asia: Commander, Captain, or Admiral | Terrorist Desert Ghillie Suit | 
| Accumulate 24 hours of online game play | Scarecrow | 
Thanks to Revolution reader SaltineKracka, walrus!
