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