When a map only has one sector, the monsters won't wake up from seeing the player and won't attack either, that's something I learned from testing custom monsters, but I'm not sure of why it happens.
My only guess is that there's probably some function that checks if a monster can see the player by comparing the heights of sectors or something like that, and since it cannot compare two sectors when there's only one it never gets called. That's only a guess, I really have no idea, I couldn't find anything when I googled it.
This could ascend to Cacoward quality with a simple copy/paste clone job -- then it'd be Double Impact. *booed off stage*
It's an adequate "my first map." You chew up lumps of fodder with weaker weapons in small rooms with sharp directional lighting for about 2 minutes. One of the secrets was cool. Satisfying enough.
errrmm... Yeah. They really don't. Its not as if they are dormant - they follow you. Even the archvile. It's slightly surreal having a mob of doom monsters following without attacking.
If that was used effectively, it might be cool. But to misquote Wolverine - it's a big square room...