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.
Buy every upgrade and character in multiplayer.
Reach level 60 in multiplayer.
Incapacitate 25 enemies with dodge counter.
Kill 20 enemy players in multiplayer using a turret.
Kill a zip-lining enemy player in multiplayer.
Rope pull 5 enemies off edges.
Shoot 10 enemies off zip lines.
Fully mod and completely upgrade all weapons.
In multiplayer, escape death 3 times by using the rope ascender.
Complete all conversations with the Endurance crew.
Complete a match in all multiplayer modes.
Kill 10 multiplayer enemies using your melee attack.
Revive a teammate in a multiplayer match.
Kill 2 multiplayer enemies with a single explosive.
Find all documents, relics and GPS caches.
Complete all challenges.
Complete the game.
Purchase all skills in all categories.
Kill 75 enemies with the rifle.
Kill 40 enemies with the shotgun.
Complete all optional tombs.
Collect 75% of all relics.
Find 75% of GPS caches.
Find 75% of all documents.
Kill and loot 10 small animals (rabbits, chickens, rats).
Complete one challenge.
Kill and loot 10 flying animals (crows and gulls).
Fully mod and completely upgrade any weapon.
Purchase a new multiplayer character.
Shoot a bundle of dynamite out of the air.
Collect 5000 pieces of salvage.
Kill FeeFee the crab.
Purchase all skills in one category.
Kill and loot 10 large animals (deer, boar, wolves).
Loot 200 enemies.
Find 25% of GPS caches.
Kill 25 unaware enemies.
Survive 10 explosions in multiplayer.
Force an enemy to drop dynamite that kills two people when exploding.
Collect 25% of all relics.
Perform 15 finishers.
Find 25% of all documents.
Kill 50 enemies with the bow.
Kill 35 enemies with the pistol.
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.
Complete one optional tomb.
Perform 50 headshot kills in the single player campaign.