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Advanced engine needed  : Boom (complevel 9)
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Title                   : ccc
Filename                : ccc.wad
Release date            : 03-28-09
Author                  : gggmork
Original thread         : https://www.doomworld.com/forum/topic/45751-a-second-cruelly-hard-map/

Original description    :

http://www.sendspace.com/file/khfrx0
(tested w/ prboomplus & zdoom, uv only)
Maybe the hardest map I've made so far, longer and visually better than the one below, but still focused on gameplay. Its probably finished but might need tweaks like time lifts take or ammo etc and I havn't maxed it yet with or without saves- but if i or anyone makes a demo on this version and decide to make a change, the next version could just be called v2 so this demo/version won't desync.
Since I hate figuring stuff out in maps, this is what happens: you have to walk into every 'doughnut' to light it up. After they're all lit, a dummy doll gives you a megasphere and the bfg platforms lower as well as the central area (same trigger, just timed a bit later). Hit the center switch to reveal 3 eye switches around the outer perimeter. Each eye switch makes 5 viles warp center, after all 3 eyes are switched, 7 central cybers are lowered (each platform timed a bit later than previous). The exit's in the middle after you hit those switches. Most likely this is all obvious anyway.

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Taken from the compilation "Mork, Murder, Art": https://www.doomworld.com/vb/thread/118077