Just downloaded it, only been playing for half an hour so far. Big complaint is how awkward the writing is. It's clear the writer doesn't speak English as a first language, the extended dialogue scenes are frankly just painful to sit through. I'd highly recommend getting a good writer who speaks English fluently to go over and fix everything up.
Largely the structure, but there are quite a few grammatical errors as well. Largely, the sentences just have very little flow to them, characters speak in an incredibly unnatural way through a combination of being overly formal and unusual word choice. It could be improved by focusing on how one word or idea could lead unto the next in a natural manner, instead of just placing one after the other.