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