Here is the full list of all 50 Lost Planet 3 achievements.
Took Storm Readings.
Planted every Post.
Completed Deep Core Drilling.
Discovered the Lost Contractor's Fate.
Found a Memento.
Tagged an Albino Tarkaa.
Stopped the Akrid infestation.
Opened the Armory.
Returned the Medicine.
Killed a Cat-G Akrid with the Rig.
Found 50% of Logs.
Found a Mysterious Structure.
Purchase First Rig Upgrade.
Brought the Com-Dish Online.
First Weapon Upgrade Purchased.
Planted your First T-Post.
Rescued the Trapped Scientists.
Secured the Moorings.
Emptied your First T-Post.
Defended Laroche.
Got your Rig.
Found a Log.
Saved by Laroche.
Killed the Gorevorgg.
Restored the Fueling Depot.
Discovered Nushi.
Defeated Laroche.
Watched Coronis Fall.
Stopped Isenberg for Good.
Finished the Game on Any Difficulty.
Finished the Game on Hard Difficulty.
Bought every Weapon and Rig Upgrade.
Fully Unlocked Bestiary.
Found all Logs.
Finished Kovac's Quests.
Found all Mementos.
Purchased all Ethologist Upgrades.
Won a Multiplayer Match.
Won 25 Multiplayer Matches.
Won every Scenario.
Perform your first Stealth Kill in a Multiplayer Game.
Delivered The T-Eng Canister 2 times during a multiplayer Outpost Scenario match.
Killed 20 Wardeyes during a multiplayer Research Lab Akrid Survival match.
Delivered the T-Eng Canister 3 times during a multiplayer Alpha Lair Scenario match.
Destroyed Satellite Array.
Get a kill while on the Battlecat.
Delivered the T-Eng Canister to win a multiplayer Quarantine Scenario match.
Unlocked Sphere Cell.
Unlocked 30 Sphere Cells.
Unlocked all Sphere Cells.