I can see this is very experimental. The graphics are inconsistent and the sound design isn't exactly the best. You shouldn't be able to walk into an enemy and get repeated damage until death, maybe making the knockback a little less crazy and giving a few moments of invulnerability should fix the problem.
Asking for someone's e-mail is never a good idea, it would have been okay to simply allow the content to be right in the game itslef, since not many are probably going to trust you with the information and writing "I hate spammers" isn't enough to make anyone think you wouldn't be making ill use of it.
That said, I can see you had fun making this, and I can sense a god degree of heart put into the work, I enjoyed, despite it being outrageously simple, the little hint pointint towards her sister being implied in what happened.
With some work and the right amount of passion you might get to something far more articulated in the future. I hope to see that happen!