A very cute game! As someone relatively unfamiliar with hypno, finding the right combos can be tricky because so many of the overlapping kinks can be very nuanced (just like real life). I was able to get all 5 levels to 4 stars on my first try. Maybe once I learn a bit more I'll be able to perfect them!
The only issue I had besides was that my game would crash occasionally, but only on the Dronification level.