http://necros.quaddicted.com/temp/ne_eels.zip <-- demo first or i'll forget to post it. :P
2 demos, first one died when first entering air section of the map.
the trick is to pull the pairs of shamblers individually. (same at the end of the lava section).
skill level felt about normal skill to me, edging on hard. i picked up the quad just before going into the lava section, so i rushed right in there and zerged all the vores down quickly before the quad ran out. i was actually right at the two shamblers at the end but i headed back to get all the kills.
i played better on my first run (before i died, obviously) because i was a little annoyed with myself that i hadn't been saving when i restarted the second time. :P
i loved the strong colour theme throughout. very cool. the air section being much higher up was very thematically relevant. excellent use of textures, although the texture palette was maybe a bit light.
architecture was great, of course. the consistent use of those circular curves gave a very solid, well built look.
clean brushwork, i don't remember being caught on anything or being tripped.
thanks for a great (surprise) map! ^_^