I really like the art and I think it looks better than the original [I haven't played/heard of it till now but I looked at some videos.] I like to imagine that the rebound for hitting an enemy is the character jumping for joy that they hit some one, but it also adds some really nice feedback for the player. It does make ledges with a deadly drop (like into water) and an enemy a little frustrating though since you can't just jump across and fire at an approaching enemy {Not really a problem, just something to keep in mind.} Despite it being unfinished I can see where it's going, and it looks good!