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