Decent autorunner here at the start, it starts to lean a bit cheap as it gets further in (reminds me a bit of IWBTG at times). I got as far as level 40 at which point it felt like I'd have to basically memorize way too much to complete it, I see that it ramps back down a bit for stage 41 but I think I'm just gonna abandon it at this point. At a certain point even for me, someone who is generally a fan of harder games, things just cross over to more annoying than they are worth.
Anyways I think the first half or so of the game is pretty okay, probably worth the buck just for that.