Pretty chill levem you have here. Colours seem pretty spot on, and it has proper energy throughout for the most part. I noticed some difficulty in inconsistencies but they weren't anything major. I was also kinda bothered by repeated patterns, buy I suppose that that helps make the level easier to learn. Overall, very nice.
it pulled off 7 enemies pretty well, it's got like a mix of old and new styles in it and i'm really enjoying that
for the most part it played like a main-game level but looked like a newer one - it was fun and looked good in other words
it was pretty difficult (to me) but the song is somewhat short so it probably won't be making it onto the level list, but that's fine because that's only for very challenging levels (i wouldn't worry about that bit too much) - it felt fair yet still challenging enough to be fun
also: you did a really good job at keeping the patterns varied, i don't think the level felt stale at any point which is great