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