Activate a Tweak

Defeat 20 Enemies While Swimming

Finish the Game on Normal Without Changing the Difficulty

Kill 30 Enemies with the Tau Sniper

Compare Statistics with Friends

Defeat 20 Enemies by Blind-Firing While in Cover (without aiming)

Find 80 Treasures

Play in the Swimming Pool on the Cruise Ship

Kill 30 Enemies with the KAL-7

Hit 3 Enemies with Fish in the Market

Kill 100 Enemies with Headshots

Kill 30 Enemies with the Arm Micro

Defeat 50 Enemies with Hand-to-Hand Combat