Here's my Gamesave that has all the collectables and whatnot it can also unlock some other achievements, If the achievement is like E.G make 25 syringes if you make one it should unlock. But i do recommend playing the game yourself and then using this only as a cleanup save for the achievements you have missed.
Information in the spoiler.
Fully Inked - Buy the last skill
Rebel with a cause - Follow "Island Liberator"
Island Liberator - liberate the last outpost if you need "Unheard" do it silently
Dead letters - Get the last letter
Memory to spare - Get the last Memory card, It's at the only non liberated outpost
The good stuff - Get the mats and craft a special syringe
Island Paparazzi - Tag some one at the non liberated outpost
Heartless Pyro - Burn some one to death with the flamethrower at the non liberated outpost
Poker Bully - Get the last $200-300 I just went all in and hoped for the best because I suck at poker
Picking up one of the Relics will give you
Use this save only if you need "full bars" for anything else use save 1
Download -Download Link