Defeat 20 Enemies with Hand-to-Hand Combat

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

Finish the Game on Easy Without Changing the Difficulty

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

Find 40 Treasures

Kill 5 Enemies with Brutal Combo

Kill 100 Enemies with Headshots

Find the Strange Relic

Find 10 Treasures

Kill 20 Enemies with Headshots

Complete one of the Collectable strands.

Deliver 5 camp companion item requests.