The idea of throwing potions because of fear seems very made up. Maybe preserve the concept but come up with different motivation?
Controls are not very good. Gamepad support is mandatory for platformers, but if you play with keyboard than you typically jump with Space. It was confusing in more active moments why the character wasn't jumping and it turns out that was because I was pressing Space instead of W.
Gameplay wise, it seems that once you are fearful enough and throw potions fast and there is a big guard in front of you, there is no way to win because you can't jump on it (it's too tall) and when you come towards the guard, guard gets some potions and duplicates.