Update got another run like that but used whirlwind and execute. The skeleton survived longer than the boss because he was immune to skills :) An incredible game I'll probably come back soon.
Oh my god, I just had the best run! So late into the game, I got the water set and I didn't think much of it. Then I found an INT potion and my INT was at 200 which means 100% uptime for everything. I had ashield so the enemies could never kill me and I got all the way to the end and killed the boss without him damaging me even once. I missed 3 paths worth of stats. Imagine if I has a skill that did damage :D
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Thanks so much :) The game does get a bit loose in the end as your stats get to nutty thresholds, glad you found all those strats.