Here is the full list of all 50 Lost Planet 3 achievements.
Found all Mementos.
Found a Memento.
Tagged an Albino Tarkaa.
Completed Deep Core Drilling.
Stopped the Akrid infestation.
Opened the Armory.
Returned the Medicine.
Found 50% of Logs.
Killed a Cat-G Akrid with the Rig.
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.
Took Storm Readings.
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.
Planted every Post.
Bought every Weapon and Rig Upgrade.
Fully Unlocked Bestiary.
Found all Logs.
Finished Kovac's Quests.
Purchased all Ethologist Upgrades.
Discovered the Lost Contractor's Fate.
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.