It took a while to get a grasp of the mechanics, but when I did it was a lot of fun! Reminded me a bit of the rhythm game Dance of Fire and Ice. Definitely needs a tutorial or a slower song if you plan on continuing work on this concept. Congrats on getting even one level out with all the delays and issues you had during development. Rhythm games are very hard to make before you have any music (I did the music for my submission, so I understand that it takes a while). I think it would help the difficulty if you zoomed out a bit more. You did have an indicator to show when to time the clicks, but it was very fast and you couldn't see the timing of the next note until after the one in front of you is clicked. make the indicator longer and show the indicator on upcoming notes as well. Little tweaks like this will help the player read the upcoming pattern and make it feel more like the rhythm is the focus and not reaction time.
You have a good core mechanic resulting in fun gameplay that made me determined to complete the level. There's a few small tweaks and adjustments that could be made to really elevate it. The presentation may have been a little lackluster, but that doesn't matter nearly as much as a solid mechanical foundation.
Great work!