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

Kill 5 Riot Shield Enemies by Running Over Their Shield

Defeat 20 Enemies While Swimming

Beat 'Chapter 16 - One Shot at This' in less than 12 minutes

Kill 30 Enemies with the Tau Sniper

Kill 4 Enemies with 1 Explosion

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

Finish the Game on Crushing Without Changing the Difficulty

Finish the Game on Normal Without Changing the Difficulty

Kill 30 Enemies with the T-Bolt Sniper

Kill 30 Enemies with the G-MAL

Kill 5 Enemies in a Row with Headshots

Throw Back a Grenade and Defeat 2 Enemies at Once