Frida's Dilemma - "Duncan" [Campaign 1, Mission 3]

I also left some red units in the castle for a spare hero, and I built up a decent army of regular troops for Frieda. The rebels were really annoying until I stationed knights in all the mines. ))
I have some kind of unpleasant bug in this add-on - when you hover the cursor over an enemy hero, you can only get a rough idea of their army. But for some reason, it doesn't say: "Danger - high" or "Danger - very low." It's a licensed disc, with patch 2.1 installed.
In the original game 1.6, there was a hint; in Lords of the Realm, there is one too, but here...

I have the same thing in 2.1, and I noticed it right away when I first started playing Lords. You just have to guess/calculate how many of each unit they have :smile19:. And these designations like "horde," "swarm," etc., are inconvenient for me because I've been playing Heroes for many years, and it's all different there. A lot means A LOT, not 10 people or whatever, I just can't remember...
How many castles are there on the map in total? I don't quite understand, and where is Duncan located - in the Dungeon? Frieda is currently level 16, but what's the level cap for this scenario? I gave her Light and Chaos magic, but there's nowhere to learn spells, and I need Fireballs...