I am now coming back to play, unfortunately, all my old tricks are not working anymore ..
I need some time also to learn mechanics, spells, etc. but i have to wait for stable version first (with loading working - when i play seriously, no loading, but for testing I prefer it).
My impression is that a lot depends on the initial conditions: how many cities you can manage in the shortest time, drops (weapons, armors), first hero employed etc. Bad luck means quick game over.