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