Here is the full list of all 32 ARK: Survival Ascended achievements.
You Ascended off the ARK, at Alpha level!
You Ascended off the ARK, at Beta level!
One of your Dinosaurs reached Maximum Level!
You found the Dossiers of each of ARK's initial Specimens!
You've discovered 100% of the Explorer Notes on the ARK!
You Ascended off the ARK, at Gamma level!
You defeated ARK's third Guardian!
You've defeated ARK's three Guardians! And yet...
You've reached the highest mountain peak of the ARK!
You've discovered 90% of the Explorer Notes on the ARK!
You've reached the bottom of the ARK's oceans!
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 defeated ARK's first Guardian!
You defeated ARK's second Guardian!
You rode on the back of a Giganotosaurus!
You've cured yourself of Swamp Fever!
You've discovered 50% of the Explorer Notes on the ARK!
You've discovered 40% of the Explorer Notes on the ARK!
You uncovered more than 80% of the Mini-Map!
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 rode on the back of a T-Rex!
You Survived a full day and night on the ARK!
You Rode a Dinosaur!
You Tamed a Dinosaur!
You personally retrieved all the Artifacts!
You reached the Maximum Survivor Level!
You tamed all of the domesticable creatures on the ARK!
You defeated the Guardians of The Center!