Stealth take-down 5 enemies

Hit all targets in the attic with the toy gun

Find 40 Treasures

Find 30 Treasures

Finish the Game on Easy Without Changing the Difficulty

Kill 30 Enemies with the M9

Kill 30 Enemies with the Mk-NDI

Kill 5 Enemies in a Row with Headshots

Kill 30 Enemies with the KAL-7

Kill 30 Enemies with the G-MAL

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

Find 1 Treasure

Kill 5 Enemies in a Row with Headshots