Do you think that a scrolling is possible ?
The ghoul on the right appear too often and don't let enough time to escape the screen.
I think that you should have wait a little more before doing the kickstarter, it doesn't mean that the game won't be good at the end, but the game isn't far enough in the development to feel if it will be good enough.
Now, still believe in you, and if the kickstarter fail... Improve the game and come back in 2 months with something more polished. I whish you the best, really. Keep it up.