It was okay, I guess.
The stick men moved too fast to see; you could have many them a tiny bit slower. I'm like: OMG NO WAYZE!!! TEH STICKMAN THERE!!! I IZZ GONNA DO 'IM!!!
Bang. I've been hit without a chance to click the mouse. Then I'm like: OMG OMG OMG!!! TEH STICKMAN SHOT ME!!! I'M PWNED!
Moral: Slow = nice.
Fast = scary and horrible.