The map is actually relatively ok, but there are some things that bother a lot of people.
The first thing to notice:
Even though it's just normal difficulty, the HP drain is gigantic.
Then some composition tweeks that have to be done.
For example the beats from 0:19:00 to 0:21:00 are placed without distance snap and very confusing.
The sliders design is ok, I especially like those after the 1 min mark. But even though I like faster sliders, I think they're a bit too fast for normal difficulty.
Also it's sad, that you stopped so early.