id, Matt Tagliaferri (Doomcad) and all those guys who made these levels to be possible. Simon Varzseghy (sz or zs) and Jani Saska, good comments.
New levels from Scratch
Doomcad 6.1, Deth 4.19, BSP 2.3, BSP 3.0, Wintex 4.1
Yes, An Arch-Vile can make you jump out a window in the silver switch area and you can get stuck out there in the darkness. So kill him fast. But thats a secret area and simply find the rocket Launcher to kill yourself. Yhers are no other bugs in this level. Plus that Arch-Vile is on UV only.