Defeat 50 Enemies with Hand-to-Hand Combat

Defeat 30 Enemies in a Row with Your Side Arm

Find 20 Treasures

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

Kill 20 Enemies with Headshots

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

Kill 5 Enemies in a Row with Headshots

Compare Statistics with Friends

Activate a Tweak

Finish the Game on Easy Without Changing the Difficulty

Defeat 5 Guardians With a Sniper Rifle

Change into Swoop

Kill 50 Enemies by Melee-Attacking from Behind