I love this kind of space bullet hell!
The art is beautiful, the music is awesome, the grid-based controls are a little strange at the beginning, but I get it was a retro design choice.
The only complaints I have is that the enemies bullets sometimes blend with the background stars on the frenetic shooting action, and the resolution didn't fit in my notebook screen. XD
Overall it is was a great experience!
I didn't get to the end yet, but it is a game I'd like to return to in the future.
Great job guys!