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