For your information, U = Uplay Points.
First Blood (10U) - Survive in the wilderness and evade pirates
Needle Exchange (20U) - Craft 25 syringes
Jungle Journal (30U) - Unlock 50 entries in the Handbook
Higher Than a Kite (40U) - Use your wingsuit to reach the Southern Island
A Far Cry 3 Theme for Xbox 360/PS3 (10U) - Uplay-exclusive Far Cry 3 desktop wallpapers for your PC, or theme for your XBOX 360® / PlayStation®3
Tattoo Pack (20U) - Far Cry 3 Exclusive tattoos for the Tattoo editor in Multiplayer To access this content, go to the Multiplayer menu and access My Setup by clicking with your mouse [PC] or clicking the Left stick thumbstick on controllers. The exclusive tattoos can be found under the Tattoo Editor.
Revolving gift (30U) - Special weapon Cannon handgun for Single Player
This weapon can be found by entering the store at the beginning of the game or accessing the weapon selection from any of the safe houses. You will find the handgun under "Signature Weapons".
Exclusive Assignment (40U) - Exclusive Single player mission "Testing Unit"
The mission can be found by bringing up your map and locating the "Testing Unit" waypoint. The coordinates for this are X700.6, Y575.1, these are visible in the top right of your map screen.
Far Cry 3 OST (50U) - Download the official soundtrack in digital content