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