Finished this now. Took me 25 hrs, WITH a guide for the secrets for better part of the game. Man, I could have never found so many of those. With the guide in tow I also got the platinum trophy. Using all the different animal forms for basically all the different puzzles was cool, though some of those were kind of "too smart for their own good". I don't know, could be that I'm just stupid. Which it is, at least partly. The dragon became a beast after getting it "maxed", things went super sweet after that. The frog got replaced as my most used animal at that point. If you're in need of a colourful, challenging and lenghty 2D platformer metroidvania then this could very well be it!