I got to wave 11 if I didn't try something stupid with the sword I would have gotten to wave 12. There is only one this that I would want changed and that would be some way to get more health. Maybe a glory kill system like in Doom 2016? This is a very good game I loved playing it!
The sword is really forcing dumb ideas, but it's just too much fun.
I agree that the health system is not perfect. The 3 medkits (1 got removed because of the wave counter) have been there for testing and we had not time to come up with a better solution. But we are tempted to make a full fledged game out of it, because it's just so much fun playing.