Needs a lot of polishing...
I was enjoying how sadistic the game was but it just was missing an awful lot.
It really annoyed me how you spend most of the game killing one deer and then just buying upgrades. You should make each of the stages considerably longer.
There was a lot elsewhere to be looked into, just like layering problems with certain graphics, i.e. the scope going on top of the 'press s' thing.
Otherwise you've got the foundation of a pretty nice game.