Simple but well done.
Well, those last five minutes were not bad at all. Depth is certainly lacking, but it served as a good distraction.
Graphics : Slick and smooth, didn't remember much pixellisation. Interface was well done too, if not a bit lackluster.
Style : The game's simplicity hinders the style's potential. I would have enjoyed a longer game featuring the available features, especially since I felt these weren't that useful. For example, the breath-holding doesn't give enough of an advantage to be a good option since quick shooting is work much much more in the end unless you strike about ten bullseyes in a row. Also, reloading is more of an annoyance than anything else since it serves no obvious purpose and doesn't give any penalties for using it after every shot. So, to sum it up, a deeper and longer game would have better served your potential.
Sound : Nothing extraordinary but done well enough. The reloading sound felt a bit fade, though.
Interactivity : Nice menus, shooting controls are simple and efficient.
Humor : N/A
Overall : A (too) short and sweet games that is only interesting for a few minutes in its current stage. Also, you should take care of your grammar, the errors are unnecessary and easily removable.