The idea is that if all quests in the quest houses are completed, they should be orange (like, no active quests), but it turns out to be half and half: when the quests in houses 1 to 4 run out, houses 1 and 4 become orange, and houses 2 and 3 become blue. I doubt that's how it was intended. They should all be the same color when the quests are finished.
Regarding the fifth house, I have an idea... I'm glad I'm an experienced player and make save points in different saves, otherwise I would have ruined the game when I was transported to the mountain with the dragon artifacts, and the way out of there was either with a portal to the city, or with teleportation, or with boots of levitation. I didn't have any of those at that moment.
It is necessary to put up a sign with a warning or at least give a hint in the text of the quest itself that there is no way back, because if you save in one save, you can ruin the whole game...
When you get into a similar situation when obtaining the boots of levitation, there seems to be a sign there that says "there is no way back" (if there isn't one, you should put one up).
There was also a quest from a yellow player to defeat someone, and around the end of the first month (when the army is still quite weak), a barbarian player (brown) did it for me... since he is noticeably stronger than the yellow player, it's understandable. Maybe they should be made allies, or at least prevent the brown player from capturing the yellow player's castle, but let him kill the heroes. In the castle, in turn, there should be a larger army. Otherwise, he seems to be doing all the dirty work for me)).
In the Dungeon, there are scrolls with spells, lying in a circle. Only the meteor shower (for the quest) and "portal to the city" are needed there, the rest are repeated 2-3 times each and are completely uninteresting. Maybe add more valuable spells there or at least make them not repeat...
P.S.: I was very pleased with the Inferno and their false promises, but what else can you expect from demons?=)))
I found it, but I haven't received the Armageddon Blade yet. Do I have the Frost Blade to rule the world?=)