Thanks for the extensive comments! Most of this I definitely agree with and needs tweaked balanced. Especially the success rates on skill use, it's too low.
A couple of notes just to clarify mechanics. The damage spikes are due to your characters will being low. If it gets down to zero the formula spikes (semi-intentionally) causing massive damage, and will pretty much lead to anything one-shotting the player. As long as you have more than 0 will, it won't spike so ridiculously, but it will still be significantly higher damage. I definitely needed to do a better job communicating the will mechanic, since no one seemed to understand it in their streams.
In any case, super helpful feedback, thanks for playing/judging.