Clunky imprecise controls, lots of bugs, glitches and things that aren't working properly. My first playthrough I got teleported to the boss for no reason before clearing even half the level. After the boss fight I pushed 'retry', and still had the fireflies I gathered during the boss fight on me. But oh my god the game is great. The character design and overall graphics is really awesome, the idea is cool, and the music is kinda nice. I even felt some Haiao Miyazaki fary tale vibe. Really awesome. And, yea, THE BOSS FIGHT.