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