I checked your ten files with my sentient bytes and didn't found any virus, very well done !
Excepting the level 6 that had a difficulty a little frustrating, all the levels had a challenging difficulty with interesting ideas ! I think that you succeed to propose different kind of puzzle in each levels with only a few mechanisms. The arts, sounds and music were also very good and I appreciated all the efforts on the introduction and transitions between the levels, it makes the game very catchy and give it some personnality !