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.
Win a ranked match in every multiplayer mode.
Complete all conversations with the Endurance crew.
Incapacitate 25 enemies with dodge counter.
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.
In multiplayer, escape death 3 times by using the rope ascender.
Kill 20 enemy players in multiplayer using a turret.
Kill 40 enemies with the shotgun.
Revive a teammate in a multiplayer match.
Kill 10 multiplayer enemies using your melee attack.
Kill 2 multiplayer enemies with a single explosive.
Survive 10 explosions in multiplayer.
Kill a zip-lining enemy player in multiplayer.
Complete a match in all multiplayer modes.
Purchase a new multiplayer character.
Reach level 10 in multiplayer.
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.
Complete all challenges.
Fully mod and completely upgrade all weapons.
Purchase all skills in all categories.
Complete all optional tombs.
Find 75% of all documents.
Fully mod and completely upgrade any weapon.
Find 75% of GPS caches.
Collect 75% of all relics.
Kill FeeFee the crab.
Shoot 10 enemies off zip lines.
Kill and loot 10 flying animals (crows and gulls).
Kill 75 enemies with the rifle.
Loot 200 enemies.
Force an enemy to drop dynamite that kills two people when exploding.
Kill 25 unaware enemies.
Purchase all skills in one category.
Kill 35 enemies with the pistol.
Collect 5000 pieces of salvage.
Perform 50 headshot kills in the single player campaign.
Find 25% of GPS caches.
Kill 50 enemies with the bow.
Collect 25% of all relics.
Perform 15 finishers.
Find 25% of all documents.
Complete one optional tomb.
Kill and loot 10 small animals (rabbits, chickens, rats).
Complete one challenge.
Kill and loot 10 large animals (deer, boar, wolves).