I think the concept is very clever. You have a straight path which you have to follow which is very interesting because you have to dodge in unique ways and learn the enemy patterns. I really liked the white tower, as you can't keep holding left click but have to adjust your movement. However I do think the game is very difficult. Even some of the first levels can be pretty tricky and it only gets harder. Some towers like the blue one feel really hard to understand and dodge. Being able to skip levels was a great feature though, to prevent beeing stuck.
Overall, really cool game!