Cool game! What are the controls? (There's no readme, so I didn't have the patience to figure grenades out before I died). I also couldn't figure out how to pick up health.
Is the mouse too slow, too fast?
I don't think that's it. Moving around has a weird effect on the cursor where it lags behind even though the screen doesn't. It makes aiming really difficult while moving. If that's the intended effect, I think there should be two separate cursors: one that is always lined up with the mouse, and another representing the "lag".
When standing still there's a bit of mouse-lag, too, but maybe I only notice it because the mouse-lag while moving was bothering me.
Also, when pushing the limits of the mouse's range, it jolts back and forth. This is quite noticeable because I found that I like to sit at the limits of the mouse's aiming range.
Besides the mouse issues, quite cool! Lots of potential, and the variety that's already there is great.