I really like it, for some reason my playing of it had some severe lag spikes, mostly around the particles. I think it was happening mostly on their first load, because afterwards my game became smoother. It took me a little bit to realize that the lil man's running direction was what decided the sword's direction, not where the mouse was pointing around him. I think maybe having the mouse decide where the sword goes might be an idea for making control more intuitive, but that may be preference. Another things i noticed is it was really hard to get him lined up perfectly, maybe a little bit of homing to the sword (maybe 5-10 degrees?) would really help with gameplay. I got the lifesteal buff, which didn't seem to really proc- did I forget to read and it was only when the enemies were killed?
Anyways, overall I think this is really solid! I like the speed of the enemies on approach, and the stamina stun> slow run is perfect.