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.
Shoot 10 enemies off zip lines.
Shoot a bundle of dynamite out of the air.
Kill 75 enemies with the rifle.
Rope pull 5 enemies off edges.
Win a ranked match in every multiplayer mode.
Complete a match in all multiplayer modes.
Kill 2 multiplayer enemies with a single explosive.
Buy every upgrade and character in multiplayer.
Reach level 60 in multiplayer.
Kill 20 enemy players in multiplayer using a turret.
Survive 10 explosions in multiplayer.
In multiplayer, escape death 3 times by using the rope ascender.
Revive a teammate in a multiplayer match.
Catch a player in a snare trap in multiplayer.
Kill a zip-lining enemy player in multiplayer.
Purchase a new multiplayer character.
Reach level 10 in multiplayer.
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.
Kill and loot 10 flying animals (crows and gulls).
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.
Find 75% of all documents.
Find 75% of GPS caches.
Kill 40 enemies with the shotgun.
Fully mod and completely upgrade any weapon.
Collect 75% of all relics.
Kill FeeFee the crab.
Perform 15 finishers.
Loot 200 enemies.
Kill 25 unaware enemies.
Kill 50 enemies with the bow.
Purchase all skills in one category.
Force an enemy to drop dynamite that kills two people when exploding.
Collect 5000 pieces of salvage.
Kill 35 enemies with the pistol.
Perform 50 headshot kills in the single player campaign.
Collect 25% of all relics.
Find 25% of GPS caches.
Find 25% of all documents.
Complete one optional tomb.
Kill and loot 10 small animals (rabbits, chickens, rats).
Complete one challenge.
Kill and loot 10 large animals (deer, boar, wolves).