Finish the Game on Crushing Without Changing the Difficulty

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

Kill 50 Enemies with the Dragon Sniper

Kill 20 Enemies with the Pistole

Kill 100 Enemies with Headshots

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

Kill 50 Enemies by Melee-Attacking from Behind

Kill 50 Enemies with the 92FS-9mm

Kill 20 Enemies with Gunfire While Hanging

Fully mod a weapon.

GTA Online: Complete the Introduction.

GTA Online: Reach Rank 50.