Uninvited guests.

I tried playing version 2.0.0 as a human hero, but it was unsuccessful. Either at the end of the 2nd week (as in version 1.0.2) or at the beginning of the 3rd week, a guest of level 19 arrives with a two-week selection (I had a demon with 8 devils, 14 cave demons, etc.), and it's impossible to resist him. Where is the announced slowdown in AI development, 2-3 days, but with more powerful units? When playing as a human hero, due to the lack of money and resources, you don't have time to prepare the necessary number of monks to defend yourself (which is possible on the veteran difficulty). I'm curious, has anyone played as a human hero, and if so, how is it possible?