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