Complete Memory Sequence 2.

Find 80 Treasures

Kill 30 Enemies with the Mk-NDI

Play in the Swimming Pool on the Cruise Ship

Find 40 Treasures

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

Defeat 20 Enemies with Hand-to-Hand Combat

Find the Strange Relic

Defeat 250 Enemies with Headshots

Find all Treasures and the Strange Relic

Kill 50 Enemies with the Dragon Sniper

Finish the Game on Normal Without Changing the Difficulty