First of all the sound is really great!
The main (potion) mechanic is also intersting: the first time you "die" you think "wow, that's a twist. whats next?" and you really feel involved.
People already mentioned, that checkpoints could be necessary, because player the penalty(begin from the start) is too big. But I think it could be ok and challenging in a good way if the replay process won't be repetitious in some parts . E.g. axe area could be one way only.
But on the whole the game was fun and I really enjoied it :)