Achilles had assimilated the surrounding atmospheric Living Existential Authority of Life which gave him the inclination towards vitality and growth, and he had then proceeded to assimilate even more of this concentrated power in the Life Pool that Mycelle brought him to where he underwent transformation to become a genuine member of the Primordial Civilization of Life.
There he had gone a step further to assimilate the idol-like statue of THE Slumbering Genesis itself, and in that profound moment he had denied following the Way of Life entirely, instead identifying his own Way of Existence that operated according to principles no established Civilization had codified.
