Defeat 50 enemies with stealth attacks

Defeat ten enemies in a row with hand-to-hand combat

Defeat 50 enemies with the M32 - Hammer

Defeat 30 enemies with the RPG - 7

Win an Online Head to Head Ranked match using a weaker team than your opponent

Defeat 30 enemies with the Moss - 12

Finish the game in Easy Mode

Defeat five enemies in a row with headshots

Defeat 30 enemies with the Desert - 5

Find 20 treasures

Defeat 20 enemies with gunfire by aiming while hanging

Defeat 70 enemies with the M4