I've beaten the game, for anyone curious, you have to collect a total of 9 dream orbs, either by scoring high enough or collecting all the dream orbs in the levels. You can get 2 orbs for 3 of the levels.
I encountered bugs with the rail system that soft locked me during the final boss very easily. The maze had walls that looked like floors, which made it hard to distinguish. The grass rotation puzzle was disorientating and mostly trial and error. It felt like rpgmaker was struggling to handle the 3d environment.
Overall, the game is still very impressive given the time constraints and the art is great!