Full list of all 50 Far Cry 3 achievements worth 1,000 gamerscore. It takes around 25-30 hours to unlock all of the achievements on Xbox 360.
Kill 4 enemies simultaneously with one explosion (Single Player only).
Complete Riley's interrogation.
Use your wingsuit to reach the Southern island.
Kill Vaas.
Survive the encounter with Vaas and escape.
Rescue Keith from Buck.
Rescue Oliver from the pirates.
Complete a Supply Drop quest.
Activate 9 radio towers.
Spend $5000 at the shop.
Craft 25 syringes.
Complete the Rakyat initiation.
Complete "Payback" Co-op map (Online/Offline).
Complete "Rush Hour" Co-op map (Online/Offline).
Complete "Lights Out" Co-op map (Online/Offline).
Complete "Overboard" Co-op map (Online/Offline).
Complete "Sidetracked" Co-op map (Online/Offline).
Complete "Ready or Not" Co-op map (Online/Offline).
Liberate 3 outposts.
Rescue Liza from the burning building.
Unlock 50 entries in the Survivor Guide.
Craft 5 upgrades for your equipment.
Earn 5 skill tattoos.
Tag 25 enemies using the camera (Single Player only).
Liberate an outpost without triggering an alarm.
Return to the doctor with the cave mushrooms.
Lure and kill a predator.
Complete a WANTED Dead quest.
Escape the pirates and survive in the wilderness.
Kill Hoyt.
Attend the final ceremony.
Freefall more than 100m and live (Single Player only).
Earn every tattoo by learning all the skills.
Buy all attachments and paint jobs for one weapon.
Liberate all outposts.
Gather a total of 60 relics.
Gather all "Letters of the Lost".
Gather all the memory cards.
Complete a Path of the Hunter quest.
Beat any Trial of the Rakyat score.
Win $1500 playing poker.
Hunt and skin a rare animal.
Craft a special syringe.
Find the lost Hollywood star.
Kill 50 enemies with the flamethrower (Single Player only).
Fully distract 25 enemies with rocks (Single Player only).
Dive more than 60m (Single Player only).
Kill an enemy with a takedown from above from a glider, zipline or parachute (Single Player only).
Kill an enemy with the Repair Tool (Single Player only).
Kill a target from 70m or more with the bow (Single Player only).