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