Defeat 30 Enemies in a Row with Your Side Arm

Kill 50 Enemies by Melee-Attacking from Behind

Kill 30 Enemies with the SAS-12

Kill 20 Enemies by Shooting from the Hip (without aiming)

Kill 75 Enemies in a Row Without Dying

Defeat 50 Enemies in a Row Without Auto-Reloading

Kill 5 Riot Shield Enemies by Running Over Their Shield

Find 60 Treasures

Kill an Enemy While Playing as an Alternate Character Costume Other Than Drake

Kill 30 Enemies with the G-MAL

Defeat 50 Enemies with Hand-to-Hand Combat

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

Kill 10 Enemies in a Row, Alternating Hand-to-Hand Combat and Gunfire