Zero room for error, it's just not fun. And it's way too easy to click off screen, preventing you from jumping when you need to.
And at some points, you're just forced to take damage. And you're forced to hard target Imps because they cover the entire damn screen and you can't just freely target them, they only exist to drag out already lengthy boss phases.
And your aim is off center, so you're fucked if you get pushed into a corner. Should just include a checkpoint button, because getting hit even once in one section screws you over in the next.
Too much frustration and inconvenience for a basic porn game. This just isn't it.