I had so much fun playing this game. 

Some things I would like to input from playing the game, I'm not sure what your plans are for the game. 

1/ The game is incredibly easy, having to complete it on my second run. I did expect it to make me suffer a little more. 

2/ I personally didn't encounter any bugs which I'm sure you'd be happy about. 

3/ For the game to be longer, i.e. More levels and bosses. 

All in all I'm excited to see where this game goes.