Successfully complete the indicated task to unlock the corresponding weapon upgrade for the indicated character for use in any replayed mission:
| HEAT rocket launcher (Lang) | Successfully complete the first mission. |
| 7.62mm sniper rifle suppressor (Graves) | Successfully complete three missions. |
| Automatic shotgun (Graves) | Successfully complete eight missions. |
| LMG 5.56mm 200-round magazine capacity (Lang) | Successfully complete three missions. |
| LMG 5.56mm 40mm grenade launcher (Lang) | Successfully complete two missions. |
| LMG 5.56mm 25% increased rate of fire (Lang) | Successfully complete seven missions. |
| LMG 5.56mm Foregrip (Lang) | Successfully complete nine missions. |
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| Flashbangs (Graves and Lang) | Successfully complete four missions. |
| 7.62mm sniper rifle gun camera (Graves) | Successfully complete the first mission. |
| Incendiary grenade (Lang) | Successfully complete five missions. |
| Proximity mine (Graves) | Successfully complete six missions. |
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| Shotgun attachment (Graves) | Successfully complete two missions. |
