To win, you must defeat the Death Knight, Mot. Some Border Guards can only be passed if a Hero carries a Quest Artifact from a previous scenario, but the artifact beyond the Border Guard will travel with you to the next scenario.
Victory condition: Defeat Hero or Defeat All Enemies: Mot the Death Knight
Unnamed male general: A Death Knight named Mot, refuses to obey King Gryphonheart's orders. An example must be made so others will not contemplate such traitorous action. Mot has insulated himself with his armies. Infiltrate his troops, kill him, and take his command. When he is dead, resurrect his corpse and employ him in your ranks.
You receive a letter from the Lich King Gryphonheart. "Commander: It would seem as though one of my generals, a Death Knight by the name of Mot, does not wish to follow my orders, and believes that we should not attack Erathia. This is fine, as we do not need him for our plans."
Day 1
Intro part 2
"We do, however, need his armies, and I can not allow his disobedience to go unpunished. Your task is to find Mot and slay him. He will then be raised and made to serve as a minion in your own army. Succeed in this task and you shall replace him as my new general."
Day 1
Intro part 3
Even gazing at the signature of the undead King sends a cold chill through you. You quickly pen a response, stating simply, "It shall be done." You must not let Mot defeat you.
Defeat Hero or Defeat All Enemies: 
Lose All Your Towns and Heroes
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Unnamed male general: A Death Knight named Mot, refuses to obey King Gryphonheart's orders. An example must be made so others will not contemplate such traitorous action. Mot has insulated himself with his armies. Infiltrate his troops, kill him, and take his command. When he is dead, resurrect his corpse and employ him in your ranks.
Random Hero
Badge of Courage
Power skill
Collar of Conjuring
Spirit of Oppression