Really fun! Visually the game was very well made, the pixel art and the sprites are very nice :D It felt a little overwhelming at times and I couldn't really keep track what was happening but I think the game falls well into that chaos (I think a setting to turn off the motion blur/trails would be nice and help with the overload of visuals). I really like the battling mechanic, it turns a game that feels like a schmup into a completely unique game, and it's very fun (I really liked the boss fight, even though it mirrored the previous stages I think it felt so unique just because it was a bossfight + unique mechanic)
Overall, really well made! :D