Nice vivid hand-drawn graphics. Good job. I particularly like the female characters animation with her Ice fire attack, and the way the male dashes forwards. It conveys a sense of speed and damage well.
If I had an apple, I would give it a try, will check out your Android one, once released. Nice video though. Reminds me of the survival mode of games in my youth, like Final Fight, Streets of Rage and Golden Axe, obviously with a different art style.
Good job and keep up the good work developing.