Here is the full list of all 50 Tomb Raider achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Buy every upgrade and character in multiplayer.
Reach level 60 in multiplayer.
Win a ranked match in every multiplayer mode.
Complete all conversations with the Endurance crew.
Shoot 10 enemies off zip lines.
Incapacitate 25 enemies with dodge counter.
Shoot a bundle of dynamite out of the air.
Complete a match in all multiplayer modes.
In multiplayer, escape death 3 times by using the rope ascender.
Kill 20 enemy players in multiplayer using a turret.
Kill 2 multiplayer enemies with a single explosive.
Survive 10 explosions in multiplayer.
Kill a zip-lining enemy player in multiplayer.
Revive a teammate in a multiplayer match.
Kill 10 multiplayer enemies using your melee attack.
Rope pull 5 enemies off edges.
Reach level 10 in multiplayer.
Purchase a new multiplayer character.
Catch a player in a snare trap in multiplayer.
In multiplayer, be the only player on your team that isn't dead or downed.
Find all documents, relics and GPS caches.
Complete the game.
Complete all challenges.
Fully mod and completely upgrade all weapons.
Complete all optional tombs.
Purchase all skills in all categories.
Find 75% of all documents.
Kill 40 enemies with the shotgun.
Fully mod and completely upgrade any weapon.
Collect 75% of all relics.
Find 75% of GPS caches.
Kill FeeFee the crab.
Kill 35 enemies with the pistol.
Loot 200 enemies.
Kill 75 enemies with the rifle.
Kill and loot 10 flying animals (crows and gulls).
Force an enemy to drop dynamite that kills two people when exploding.
Kill and loot 10 small animals (rabbits, chickens, rats).
Kill 25 unaware enemies.
Purchase all skills in one category.
Perform 15 finishers.
Collect 5000 pieces of salvage.
Find 25% of GPS caches.
Perform 50 headshot kills in the single player campaign.
Collect 25% of all relics.
Kill 50 enemies with the bow.
Find 25% of all documents.
Complete one challenge.
Complete one optional tomb.
Kill and loot 10 large animals (deer, boar, wolves).