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