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