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