Kill 20 Enemies with a Single Punch After Weakening Them with Gunfire

Find all Treasures and the Strange Relic

Kill 30 Enemies with the RPG-7

Finish the Game on Hard Without Changing the Difficulty

Finish the Game on Easy Without Changing the Difficulty

Find 80 treasures

Kill 50 Enemies with the M4

Campaign: Killed an enemy in close combat who was hurt by another player .

Kill 100 Enemies with Headshots

Kill 50 Enemies with the 92FS-9mm

Kill 50 Enemies by Melee-Attacking from Behind

Campaign: Bought all upgrades.

Campaign: Bought all drone-related upgrades.