Kill 50 opponents using the environment (e.g. swamp gas, insects or objects).

Play in the Swimming Pool on the Cruise Ship

Kill 30 Enemies with the KAL-7

Successfully Counter all of a Brute's Damage-Giving Attacks

Kill 20 Enemies with Headshots

Defeat 20 Enemies with Hand-to-Hand Combat

Finish the Game on Normal Without Changing the Difficulty

Kill 5 Enemies in a Row with Headshots

Kill 50 Enemies with the Dragon Sniper

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

Kill 50 Enemies with the M4

Kill 20 Enemies with Gunfire While Hanging