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