Well, the visuals are good at some stages. There are some good musics, too. And I laughed a lot at the Windows Stage boss. Sadly, the good things stop here. The save placement makes it easy for you to save where you shouldn't, and you'll only realize that you shouldn't save there when it's too late. The gimmicks range between good and not that bad, but they are used in a way that can be called worse than bad.
There are plenty of tedious screens, the difficulty curve is unbalanced, most bosses look bad and have way too much HP (If you can't mash, too bad for you, you'll probably have an even worse time). And the game can get tedious to absurd levels sometimes. Wouldn't recommend.