9/10, and it can get better :)
This is really cool from first impressions.
This is a rare map where I really like the sound.
I get a Metroid Prime 2 vibe from this map, because especially the sounds and appearance of the dark world is really similar to MP2.
This is very similar to an idea for a map I'd started but never got very far on. [no accusation implied or intended here. It would be impossible for anyone to have stolen my idea anyway, since I never showed it to anyone] CTF map, 2 dimensions with portals between them, and having the maps above each other so you can't tell which dimension people are in from the minimap. (I'd planned for a third, neutral map above the other two so the minimap wouldn't show either side)The main difference between our ideas is the theme of the two dimensions, and (here's the big one) I had/have one flag for each team in the center of each dimension, with teams attacking from all sides to get to the center.
Also, I had some visual glitches in the 'sky' of the lower map when I stacked them, did you have any to deal with?
Anyway, I really like this original idea for a map.
A FEW SMALL THINGS:
I see the issue others were having about going through a portal and falling to their death. I think it would help if the ground were flat instead of slanted, because with the slant you can slide off easily.
Also, I'd clip the horizontal trees so you can walk on them like on Xenon. It seems weird to walk right through them.
As for the flow, there's a long low narrow tunnel that could probably bend a bit more to prevent perfect sight lines down them.
Also IMO you should lower the jumppad platform at each base so you don't need to jump to get onto it. you have little ramps coming from the sides, but not one from below.
[EDIT] Do you intend the quad to be reachable, because I can't get it?
also, three comments while i was writing this review :p ...no, nothing to add because of them.