Hey Noel K, thanks for the review!
It means a lot that you liked the aesthetic and music!!
Indeed, the first level might be a little too simple, the idea was that people that aren't used to playing games could also complete that level, but it might have become too easy and uninteresting for some people.
Yeah the game could indeed maybe use some more 'creative' enemies and features. That is something to consider for the future.
Thanks again for playing! Don't forget to upload your highscore : D