Ok, I've checked out the map and I noticed right after loading, it's and extended version of chthon :P.
Typical how I once heard a person who said arena is dead, is still posting an arena-styled map on quadropolis :P.
Not bad, but the flow isn't great. Try to use clipping and make the ceilings higher.
Maybe this maps is usefull.
I'm sorry I refer to some of my maps again, but I really can't help I already made a redux of chthon 0.0!
Observate it and learn what I did wrong in the map. There are some good comments on the contents wich could also improve your redux.
Maybe you should also check out the official map, "sdm1", since it's actually a redux of chthon (even tough personnaly I think it's a pretty bad redux, since it's just mirrored and the 2nd floor is way too thin, wich makes you very vurnable for explosives).
Very nice to see that you've used 1 of the mapmodels I posted on quadropolis :D! It's fitting pretty well to the theme.
P.S. I once made another second version of chthon, but seems like I've never posted it on quadropolis (didn't took any screenshots) or it's been deleted from quadropolis (it was called "scedm2" and had minor improvements on gameplay and flow, compared to ceethon).
Probably, you'll need to do the same to the chthon redux as I did and recreate a new flow either.