Use planks and sticks to make a sword.

Find a Journal Note

Defeat 20 enemies with headshots

Kill 30 Enemies with the T-Bolt Sniper

Finish the Game on Normal Without Changing the Difficulty

Find all Treasures and the Strange Relic

Kill 30 Enemies with the M9

Kill 100 Enemies with Headshots

Find 80 Treasures

Play in the Swimming Pool on the Cruise Ship

Kill 20 Enemies with Gunfire While Hanging

Defeat 20 Enemies by Blind-Firing While in Cover (without aiming)

Find 40 Treasures