Here is the full list of all 12 The Eternal Cylinder achievements.
Scan all creatures using the Analytical Eyes.
Disable 3 Witnesses.
Defeat a Liberator using Mixer Body projectiles.
Get the trunk mutation from within a Roondaslock.
Scare away a Tripobosh or Onogrosh with a smelly surprise.
Process over 100 units of mineral ingredients.
Make an Onkifurt leave its nest by spraying water into its mouth.
Scare off an Omnogrom by spraying water into its eye.
Process over 100 units of organic ingredients.
Frighten a Tonglegroplet using the Deimatic Trunk.
Destroy an Exonerator using Mixer Body projectiles.
Transform to all the mutations that exist in the game.