I only survived 50 seconds :D
From what I saw, the game is pretty fun to play, (might be biased though, JSAB is one of my favourite games!).
Dodging a bullet hell of dice sure was an interesting use of the theme, although it doesn't really fit the theme as much as other games. However, since there isn't a rating section on theme, I'd say you got off lucky :D
The music doesn't sync with the gameplay, but, like @foxtrot-roger said, its super addictive and fun, and I really enjoyed playing it!
You could genuinely make this into a custom JSAB level, it would be awesome!