That is odd, the AI never gets free wins vs barbs (and neither do players on any level in FfH) so it shouldnt apply. The AI does get -25% vs barbs across all difficulty levels (no real idea why that is, I may remove it entirely).
Well, I changed the power of barbarian heroes( Stephanos;Buboes;Yersinia and Ars Moriendi) and NOW they will survive about 20 turns, creating a little havoc. I removed their magic immunity to give the player without horses the possibility to kill them.(they have drill IV)
<FreePromotion>
<PromotionType>PROMOTION_COMBAT1</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_COMBAT2</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_COMBAT3</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_COMBAT4</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_COMBAT5</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_COMBAT6</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_COMBAT7</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_COMBAT8</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_BLITZ</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_WOODSMAN1</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_WOODSMAN2</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_CITY_RAIDER1</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_CITY_RAIDER2</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_CITY_RAIDER3</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_DRILL1</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_DRILL2</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_DRILL3</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_DRILL4</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_GUERILLA1</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_GUERILLA2</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_MARCH</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_MOBILITY1</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_MOBILITY2</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_SHOCK</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_SHOCK2</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_DEMON</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_COMMAND</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
<FreePromotion>
<PromotionType>PROMOTION_FEAR</PromotionType>
<bFreePromotion>1</bFreePromotion>
</FreePromotion>
I guarantee that with initial promotions they dont survive ONE turn. At least on the last three diff. levels.