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