No loss means just that, never losing a single unit in your entire playthrough.
There are tricks you can use to avoid the poison skull - or mitigate it. Basically the AI will do the exact same thing every time under the exact same circumstances. So what you need to do is keep trying different things until you find a situation where the AI - as an example - casts Helplessness instead of Poison Skull. This is accomplished by varying your attack order, attacking different units, etc. Pretty much any time you perform an action that requires a random number to be generated, you'll alter what the AI will do.
If the AI has the unit with the best initiative, and casts Poison Skull right away, you have less options, but one thing you can do is alter your unit positions. The AI casts the spell on the position, not the unit, so if you swap in your toughest unit (Soothsayers in this case), you can often survive a Poison Skull without a loss.
|