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