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