Brave Crusader

I completed the map! Played as a Necromancer, it took 2 months, 2 weeks, and 1 day. The Necromancer only reached level 16. I've been playing for a long time and I'm quite good at it. I tried playing as a Ranger (Faidaen), but I kept getting defeated! The map is designed specifically for the Necromancer, and I think it's almost impossible to complete with any other hero, unless the AI messes up. Has anyone managed to complete it with a different hero? My question is: why are the AI heroes so overpowered? For example, Ossir starts at level 1 with 18-20 defense and attack! But a hero that you can recruit with the same stats is no longer relevant. For example, Gotai! By the way, is it a bug that there's a beautiful girl instead of him on the panel?)))