it's a bloody fun game, but you gotta recognize, it's very unbalanced: you spend what feels like forever on the first area, only to slide through the second and third, like they were nothing more than an afterthought, but mostly because the upgrades to Launch and Rush are so much more important than just about anything else, even Stamina. and i like the 3rd area challenge--very Knightmare Tower--despite the difficult miniboss there. (making up for the 2nd area one, are we?) consequently, a lot of the upgrades seem largely unnecessary, though appreciated. it's fun, but needs some work.