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