Considering the quality of a lot of free games (many, many better than this) you may struggle to sell it. It ain't bad by any means but considering that i can buy full commercial games for under $20 that have 100's of hours of gameplay I think i'll pass...
Would be good if you could get the controls working a bit more responsively. Concept is great variation on this type of game... needs work but keep going...
Just not as good as others have said... and why have a "storyline" about using rotting corpses as ammunition and then just have little grey rocks in the game... and I don't think rocks bounce that much either.