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