hobo, a question: why is the archangel waiting on the first turn in the battle with the behemoth, huh? In that case, at least for me, the behemoth would have gone into defense instead of stomping off own way. Maybe you should also consider magic?

Without waiting, using your own calculations:
Turn 1: Archangel hits for 77hp, Ancient Behemoth responds with 83 (status: Archi 167 health, Ancient Behemoth 223). Ancient Behemoth hits for 83 health, archangel responds with 77 (status: Archi 84 health, Ancient Behemoth 146)
Turn 2: Archangel hits for 77hp, Ancient Behemoth responds with 83 (status: Archi 1 health, Ancient Behemoth 69). Ancient Behemoth hits for 83 and kills the archangel.

What do you think of this version?