The only thing that bothered me was how SHORT it was, and as mentioned before the cliffhanger with lack of sequal. However, the shortness does make the game less intimidating if you choose to replay it (I replay it a lot, I love it so much x3) but the first time I played it I was like "... NO. That can NOT be the end!! D:"
Also, I thought the final boss was too easy. I love challenging finishes that make you go "FINALLY