Looked enticing because I often like these types of games. I think often I like them because they are really fast-paced with quick split second decisions and dodging the bullets only by mere pixels. In your game, the first zig zag line seems like there isn't much you can do except stay on one side of it, which limits your manoeuvrability and means you can't hit the boss much, so it seems to take a long time to play out and there's not much change or variation for that long duration.