I really like the concept of the more you get in touch with something, the more you evolve to be able to deal with it. It fits the theme really well and is very interesting from a gameplay point of view!
Something that makes it feel a bit clunky is that I have to die a couple of times to it in order to evolve, which feels a bit redundant the way it's currently done.
The art overall is very coherent and the small sprite change when moving left-right really adds to the feel!