Full list of all 44 Maneater achievements. It takes around 8-10 hours to unlock all of the achievements in the base game on Windows.
The base game contains 32 achievements, and there is 1 DLC pack containing 12 achievements.
Defeat Adm. Barbara Terranova
Reach the Plover Island Complex
Reach level 40
Acquire 100% of the Atomic Evolution set
Complete all objectives in the Plover Island Complex
Complete all available objective in Truth Quest
Kill the Electric Great White
Kill the Shadow Orca
Kill the Bone Sperm Whale
Kill the Atomic Leviathan
Eat all the Questers
Complete 100% of the Time Trials