Just completed it, didn't take me too long indeed. To be perfectly I didn't like it much, mostly because you seem to keep ignoring the suggestions and pointers everybody gives you everytime you release a map (namely resorting to wallshading, or forgetting about those pitch black textures that are now laid over entire walls). The theme didn't make any sense (first in a forest then through a tree into some odd house / base thing full of weird rooms, then back to a forest ?), the keys in the indoor part were once again pretty pointless because of how the keypads were just a couple of feet away everytime (you might as well just have used switches, it would have made the gameplay a little bit less straightforward too). The gameplay was annoying (bad health / ammo / monster ratio, and throwing waves of pigcops and enforcers to the player like that doesn't work, same could be said about respawning octabrains and commanders in such odd locations, I spent more time running away from the monsters and dodging their shots than fighting them), that first maze with all the trunks really didn't work and felt completely unrealistic. The design was pretty poor, the outdoor locations were very very basic, I saw quite a lot of misaligned textures, and those indoor locations had some potential but the lack of wallshading and purpose behind them ruined it for me. Those floor trims (?) in that one corridor looked pretty ugly and nonsensical as well, and there were no ambiant sounds while this map definitely could have used some in some areas.
I don't mean to be harsh, I'm just sharing my honest opinion with you, hoping that you will learn and improve from my comment. I really think you need to polish your levels more, pick a theme everytime and stick to it (ie. I remember your Compton map and I would have liked it much more if it hadn't been for that sudden switch to a base theme halfway through the map), and start focusing on shading / lighting / wallshading / sounds / atmosphere in general, rather than just (randomly) detailing your indoor areas and hoping it's going to work out.