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