I think the fun in this game shines when it starts getting really hectic, and this is great! The beginning is a good warm-up to get used to the controls and the mechanics, so it definitely has its place, but after playing through it once or twice, it's true that it can start getting a bit repetitive to have to wait some time to get into the heart of the action.
The art is absolutely gorgeous, and I feel like you made great use of the limited palette, to the point that I forgot that there was one at first! The animations are great as well, although I think the blue scorpions' animations are bugged? But that's just a nitpick. Graphically it was really great!
Overall I think this is a great entry, and a great game for the LTRO-1. Well done!