As usual, the "retro" part is debatable, but nevertheless these are some awesome maps. Nice job, guys. Here, have some
demos.
ionous: Unique style with a fitting title. As Shambler put it, "so many lights, yet so little light", heh. It's a bit on the dark side, but adjusting gamma a little did the trick. Good brushwork and details, though also somewhat samey in places. However, I never really feel lost, so it's fine. The many white spots put some strain on my eyes after a while.
Gameplay is fine, except it maybe suffers a bit from the fact that the floor grates cripple the monsters' movement (otoh occasionally much in my favor). Fiend super jumps can be a problem.
skacky: Same style as your other map, but the Ziggurat Kelltigo setting is a nice twist. Looks very cool, a bit like a sane version of a Tronyn map. Lots of details and good shapes (in ionous' map, too). Fun gameplay and nice secrets - I actually managed to find a few for a change!