I don't know why everyone was complaining about headshots. Sure it's different to have to slice through the neck or feet to kill but after you adjust to that it's just fine. The real problem is that the game makes you think you have a rail gun when really each ray just pierces one body part. Again that can be adjusted to but it's a bit harder because every blast looks like a rail gun blast that should just keep going.
The biggest problem were the corpses. Corpses got me killed so fucking often because if a ray pierced a corpse it wouldn't hit shit after that. I didn't even realize what was happening for the longest time because I'm SO conditioned to corpses that stay on screen just being decoration. This could potentially be adjusted to if it weren't for the fact that I run out of space on each and every level! I'm hitting corpses constantly instead of my targets! If that's meant to add to the challenge then you definitely need additional platforms to even it up so I have enough space to do my business. Either that or you intentionally made that so it would be hard as all fucking hell, in which case, this game just isn't for me and I got the wrong feeling that you didn't mean to do that. Good game, I know you said you were already planning on building on it and I hope you do because it's DEFINITELY got potential.
P.S. Minor nitpick, but the variety was crap. Every level was exactly the same looking, no distinguishing features, every zombie was nearly the same, and the character options for making your own personal Deimos Hank or Sanford were truly pitiful. Again though, this is a nitpick. Not something required for a great game, but if you want it perfect, this needs to be fixed too in my opinion. Thanks for listening.