Mapmaster 2011

Launched the map The mystery of the ancient marshes. Started with a random faction, and on the very first turn, near my castle, there was an enemy hero with 50 skeleton warriors. It wouldn't be so bad, but his stats are approximately level 6-7, and he has Chaos magic, which he uses to crush all my troops. The first time I played as Inferno, I couldn't defeat him; the same happened when I played as Fortress. I chose Haven, killed him. But what to do next? How can I break through the nightmares and death knights with 18 archers? Thank you. I started a new game as Vittorio, killed that monster, leveled up my ballista a bit, and I'm thinking of taking the Wood and Stone resource now, leveling up a bit, and then trying to break through all these horrors. But... what happened? Here's another enemy hero, and this time, besides the 50 warriors, there are 45 demons, AND THE SAME DAMN CHAOS. I turned off the map. I probably won't rate it. Let me be a noob and a lol who couldn't overcome such a simple situation.