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