I have got the basics down pretty good with level design. I have, however, found an impass as I progress through my project using the DOOM3editor. Seems that no matter where I place monsters, they don't correctly engage the player. Upon initial activation, they will pursue straight to me, but after a few seconds, or if I move around a corner to hide from them, they loose site of me, and end up walking into a wall and continue to do so unless I enter their attack cone. It would also seem they are more interested in seeing the architecture than hurting me, makes me flattered really, but is not the intended purpose lol. Is there some sort of A.I. I need to implement to the monsters to make them keep pursuing after the initial encounter? Or is it possible that the level design is a bit skewed? I have never captured video before, but if that's needed I will do so. Or if you want the beta format of the level in the editor, I can try to upload the necessary files for you to see for yourself.
I have figured it out actually, haha. Seems I never thought to use the monster clip textures at all... >< noob mistake. For those that do not know, just compare it to the code "noclip" in DOOM3. This texture clips the path of the monster and simplifies it so it doesn't get stuck on the details of the level. And helps with the high ceilings and such. /solved :D