Tactics for playing as the Dwarves.

So, how do you play against human players using the Fortress faction? We have a duel coming up soon, and I think he'll take an offensive unit set. If I defend, it won't be pleasant when the Knights of Isabel charge in and deal 2 hits to 2 units (1 archer unit), and the griffins will also take out 2 units each (flying... or maybe just hitting 1 unit)... And I have no idea what to do about it (I don't even know how to kill the Knights and their upgrades. Before, they were the ones deciding the outcome, and I couldn't do anything... although that was with Necropolis). ... Give me some tactical advice... If I take the Rune of Recall, I'll take Inga... and what should I choose: Battle to the Last (killing units with one hit, I think these damn paladins will do that very often, and also with Overlord...) or Readiness? Also, is it worth taking the Amulet of Light? After all, the opponent will be a warrior hero with boosted light magic... I'm really lost in my thoughts...