Far Cry 3 Deluxe Edition for PC includes the following extra in-game content:
The Monkey Business Pack: Meet Hurk and his explosive bomb-carrying monkey in four heart-pounding missions and get two bonus ways to humiliate your friends in multiplayer
The Lost Expeditions: Discover the secrets of the island’s lost World War II ruins in two suspenseful action missions, and unlock the power of a shotgun in a one-handed flare gun in multiplayer.
The Warrior Pack: Strike fear in your enemies with an exclusive dagger and get an early unlock of the tattoo editor in multiplayer.
The Predator Pack: Hunt four ferocious animals with the M-700 Predator Rifle in single-player and silently kill opponents with the unlocked Predator Bow in multiplayer.
Also included: the Survival Guide (pdf file): Discover unique artwork and insider information to help you survive the insanity of the island.