Full list of all 33 ARK: Survival Evolved achievements worth 1,500 gamerscore. It takes around 1-2 hours to unlock all of the achievements in the base game.
The base game contains 18 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 15 achievements worth 500 Gamerscore.
You found the Dossiers of each of ARK's initial Specimens!
You've reached the bottom of the ARK's oceans!
One of your dinosaurs reached maximum level!
You defeated ARK's second Guardian!
You defeated ARK's first three Guardians! And yet...
You've uncovered more than 80% of the Mini-Map!
You reached the maximum survivor level
You defeated ARK's first Guardian!
You defeated ARK's third Guardian!
You tamed a Dinosaur!
You survived a full day and night on the ARK!
You've cured yourself of Swamp Fever!
You've reached the highest mountain peak of the ARK!
You rode on the back of a T-Rex!
You Rode a Dinosaur!
You rode on the back of a Giganotosaurus!
Unlock All Achievements.
Personally retrieve all the Artifacts.
You Ascended off the ARK, at Gamma level!
You've discovered 100% of the Explorer Notes on the ARK!
You've discovered 90% of the Explorer Notes on the ARK!
You've discovered 80% of the Explorer Notes on the ARK!
You've discovered 70% of the Explorer Notes on the ARK!
You've discovered 60% of the Explorer Notes on the ARK!
You've discovered 50% of the Explorer Notes on the ARK!
You've discovered 40% of the Explorer Notes on the ARK!
You've discovered 30% of the Explorer Notes on the ARK!
You've discovered 20% of the Explorer Notes on the ARK!
You discovered 10% of the Explorer Notes on the ARK!
You Ascended off the ARK, at Alpha level!
Defeat the final boss on Medium difficulty
Tame at least one of every tameable creature on the ARK
Defeat the Guardians of The Center