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