Here is the full list of all 51 Far Cry 3 trophies - there are 38 bronze, 10 silver, 2 gold and 1 platinum.
Obtain all the Trophies.
Win $1500 playing poker.
Gather a total of 60 relics.
Craft a special syringe.
Gather all "Letters of the Lost".
Earn every tattoo by learning all the skills.
Liberate all outposts.
Gather all the memory cards.
Kill 50 enemies with the flamethrower (Single Player only).
Fully distract 25 enemies with rocks (Single Player only).
Kill 4 enemies simultaneously with one explosion (Single Player only).
Kill an enemy with the Repair Tool (Single Player only).
Beat any Trial of the Rakyat score.
Complete a Path of the Hunter quest.
Hunt and skin a rare animal.
Buy all attachments and paint jobs for one weapon.
Freefall more than 100m and live (Single Player only).
Find the lost Hollywood star.
Complete a WANTED Dead quest.
Attend the final ceremony.
Kill Hoyt.
Complete Riley's interrogation.
Use your wingsuit to reach the Southern island.
Kill Vaas.
Spend $5000 at the shop.
Survive the encounter with Vaas and escape.
Rescue Keith from Buck.
Kill an enemy with a takedown from above from a glider, zipline or parachute (Single Player only).
Rescue Oliver from the pirates.
Kill a target from 70m or more with the bow (Single Player only).
Craft 25 syringes.
Dive more than 60m (Single Player only).
Unlock 50 entries in the Survivor Guide.
Activate 9 radio towers.
Complete the Rakyat initiation.
Craft 5 upgrades for your equipment.
Rescue Liza from the burning building.
Liberate 3 outposts.
Tag 25 enemies using the camera (Single Player only).
Lure and kill a predator.
Earn 5 skill tattoos.
Liberate an outpost without triggering an alarm.
Return to the doctor with the cave mushrooms.
Complete a Supply Drop quest.
Escape the pirates and survive in the wilderness.
Complete "Rush Hour" Co-op map (Online/Offline).
Complete "Sidetracked" Co-op map (Online/Offline).
Complete "Lights Out" Co-op map (Online/Offline).
Complete "Overboard" Co-op map (Online/Offline).
Complete "Ready or Not" Co-op map (Online/Offline).
Complete "Payback" Co-op map (Online/Offline).