Nice little endless survival game, and a bullet hell game in disguise! The visuals are nice, controls are responsive, the game is surprisingly fun and addictive too!
My only bit of issues is that I never knew exactly what potion does what, and what ingredient results in what potion, leading me to throwing what was available at that time, and hope the potion is good. But to be fair, when the game progresses you don't really get time to think that much amongst the bullet hell chaos, so I guess that's a non-issue after all.
Also, maybe adding arrow keys for movement as well? Given that all controls are on the left hand side, my hand are getting a bit tired after each play though.
Anyway, this is an extremely enjoyable game! Well done!