Very well made game. I didn't realise there was a map until after I was done, but the world is so competently designed that I never actually needed it.
The only criticism I have is that the communication felt a bit lacking (I have no idea what the green collectables are for, and the bouncy mushrooms are very easy to miss), and that spikes being instant death felt somewhat unfair (I never died to the forest boss, but managed to repeatedly die to the spikes while trying to leave the arena).
Otherwise, this is a great game.