Thank you for your feedback, I am definitely aiming to fix most of the confusion and spelling in the game so will take it all into consideration.
1 health pool per run is a good call. Currently I wanted to give at least 1 safe kill per round without much drawback and treat it more as a '1 confirmation' per round which is useful or needed in difficult levels. But main mode could be redesigned to fit a health pool that is persistent through out a run, and you are right, kills would be more meaningful then. I am looking into that.