Full list of all 99 Shadow of the Tomb Raider: Definitive Edition achievements. It takes around 60-80 hours to unlock all of the achievements in the base game.
The base game contains 63 achievements, and there are 7 DLC packs containing 36 achievements.
Shoot a turkey with a Flare Round
Finish the main storyline
Complete Shadow of the Tomb Raider on Smart and Resourceful difficulty
Complete Shadow of the Tomb Raider on Rite of Passage difficulty
Reach 100% completion
Make an unlikely ally
Complete all Artifact Collections
Find and open all the main game Conquistador treasure chests
Complete all main game Challenge Tombs
Defeat the Nahual
Earn all skills in one category
Return to Paititi
Kill 5 enemies with friendly fire
Find the Silver Box of Ix Chel
Find the mission of San Juan
Burn 2 enemies simultaneously
Kill 5 enemies while they are searching for Lara
Perform the Serpent's Fury 3 times
Free Unuratu from prison
Rescue Hakan from the cultists
Fully upgrade the knife
Complete 8 Side Missions
Stealth Takedown 25 enemies
Craft special ammunition 50 times
Hunt and loot 5 rare animals
Hunt and kill 10 enemies while Perception is active
Restore 5 vestige outfit pieces
Collect 20 critters
Complete a climb after finding the Overhang Climbing Gear
Get out of the Cenote alive
Collect 5 underwater Artifacts
Complete 3 main game Challenge Tombs
Retrieve Manko's Necklace
Get 3 pieces of equipment
Pet 5 llamas
Find Paititi
Kill 3 enemies while they are distracted
Enter the Temple of Life's inner chamber
Perform a Stealth Takedown from a mud-covered wall
Restore and equip a matching vestige outfit
Complete a Side Mission
Get rid of the pillagers outside of Kuwaq Yaku
Learn of 5 interesting locations from civilians
Uncover 3 main game Crypts' secrets
Fully upgrade a weapon
Complete 5 Challenges
Buy an item from a merchant
Gather 40 gold ore
Complete an Artifact Collection
Defeat the Empress Jaguar
Decipher a Monolith
Purchase a Skill
Survive the flood
Remove the dagger from the Temple of the Moon
Decipher the Path of the Stars
Perform 5 Eagle's Talon Takedowns
Perform 3 headshots in 3 seconds with the pistol
Lose the enemy 10 times
Kill 10 enemies while Focus is active
Takedown 10 enemies while Endurance is active
Perform 20 headshots with the bow
Complete Shadow of the Tomb Raider on One with the Jungle difficulty
Complete Shadow of the Tomb Raider on Deadly Obsession difficulty
Obtain Divine Bounty skill, equip Serpent Lash Godslayer weapon and Dragon Scales Legend outfit
Complete the Two Graves Side Mission
Complete the Slayer's Gauntlet Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Time Attack for the Slayer's Gauntlet Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Score Attack for the Slayer's Gauntlet Challenge Tomb
Complete all 7 downloadable content missions and receive the Tunic of the Shorn One
Obtain Magic Touch Skill, equip Silver Strike Moonbeam weapon and Midnight Sentinel Farseer outfit
Complete the Eternal Reward Side Mission
Complete the Mother Protector Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Time Attack for the Mother Protector Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Score Attack for the Mother Protector Challenge Tomb
Obtain the Volcano Skill, equip Whispering Scourge Pandemic weapon and Reptile Hide Leviathan outfit
Complete The Wrathful God Side Mission
Complete the Zipacna's Craving Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Time Attack for the Zipacna's Craving Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Score Attack for the Zipacna's Craving Challenge Tomb
Obtain the Grenadier Skill, equip the Umbrage 3-80 Shade weapon, and Brocken Shadow outfit
Complete the Echoes of the Past Side Mission and discover Abby’s ancient origins
Complete the Forge of Destiny Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Time Attack for the Forge of Destiny Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Score Attack for the Forge of Destiny Challenge Tomb
Obtain the Raptor's Eye skill, equip the Silent Sting Scorpion weapon and Hunter's Array Apex outfit
Complete The Dragon and the Prince Side Mission
Complete The Sixth Seal Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Time Attack for the Sixth Seal Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Score Attack for the Sixth Seal Challenge Tomb
Obtain A Thousand Eyes skill, equip elite versions of Oathtaker's Bow and Sinchi Chiqa Battle Dress
Complete The Age Makers Side Mission
Complete the Path of Huracan Challenge Tomb
Obtain a Bronze, Silver or Gold medal in Time Attack for the Path of Huracan Challenge Tomb
Obtain a Bronze, Silver or Gold medal in Score Attack for the Path of Huracan Challenge Tomb
Obtain White Breath skill, equip Grip of Fear White Knuckle and Scales of Q Feathered Serpent
Complete the Path of Fear Side Mission
Complete the Howl of the Monkey Gods Challenge Tomb
Obtain a Bronze, Silver, or Gold medal in Time Attack for the Howl of the Monkey Gods Challenge Tomb
Obtain a Bronze, Silver or Gold medal in Score Attack for the Howl of the Monkey Gods Challenge Tomb