I liked this a lot! This is about the right level of fidelity for such a prototype to have an efficient design process ;)
What round did you get to before quitting?
Round 3 in the first playthrough.
What was your strategy, if any?
Computing expected values optimizing my chances of success. I did sacrifice a bit of that for dice pool diversity on occasion. It seemed like I might need that in the next rounds.
What did you most like?
Playing with numbers, calculating the optimal strategy was very fun.
What was frustrating?
Failing despite having estimated an acceptable chance of success. Random chance can be cruel.
What did you wish you could do?
I would have liked having more options to manipulate my chances of success. What I was doing felt like there was mostly a correct answer. Of course, figuring it out is comparatively hard as it involves some computation, which I find fun and rewarding in its own right. But after doing that I felt that there was no choice left.