- Generating random maps in Heroes of Might and Magic III: The Shadow of Death.

I'm creating a random map, the goal is to kill a monster, without AI opponents, single player... the map has no water, G. In the specifications, I allow all heroes. Question: why, when I enter the game and try to start playing, only half of all the heroes are available (the Rampart faction, but the problem extends to all factions)? The editor and the game are from HOTA, the latest version.