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