The most difficult alternative

I respect everyone's choices. But Rider... you chose a ballista, which will slow you down on the adventure map. Champions are defeated quickly (it's a pity:(). There are just a lot of flying units in the game. Some fairy with phoenixes will fly up, and there will be no archers left. But who will fight? Life progresses in close combat. :) Therefore, I recommend trying:
Pikeman:smile14:
Crusader:smile14:
Angel:smile14: