Does anyone have maps that are truly challenging and interesting, not just for beginners?

Hello! Perhaps my question is not relevant, but I'll ask anyway... I tried playing on the Gift2001 map. I completed the first three heroes, defeated the next two main heroes (Gami and Killor), and then I hit a dead end. How do I capture their last cities and get to Lady Fire's place? Maybe someone can help? It's a pity to waste time. I would like to finish what I started and complete the map. The map is really quite interesting. Thank you in advance!