Board Thread:General Discussion/@comment-71.174.175.9-20150123035932/@comment-24035373-20150123061102

if he's one-shotting you, either your HP is too low (but I doubt that's the case) or it's because he is instant death-ing an already poisoned unit. basically, his normal attacks always causes a deadly poison effect to the units it hits. if he hit said unit (still poisoned) a second time, they will died instantly (marked with a skull icon when he fatally hits them). you can prolong your survival by using a high or great potion on any poisoned units to ensure they don't get instant death'd the next turn. I think when the boss reaches below half health/HP, he does a special attack that (may, I don't remember for sure) Deadly poison all your living units, so be careful about that. I believe the boss can't hit the same unit twice in a single turn (except maybe when there's only one or two of your units left).