I went and added up the total damage dealt by all my boss's attackers. It was roughly 45 million. The total number of "actions" to get that 45 million damage was about 25K. 45 million is roughly 1/20th of the boss's total health. If it never reset even once, it would take about 500K "actions" to kill it. FIVE HUNDRED THOUSAND. Don't you think that's more than enough to warrant not imposing the death penalty every time someone kills your character?