Well, I accidently made another campaign, it seems. This one's a lot shorter and more laid back than the other ones I did. Although I
did go back to replay Flipbook and Treacherous for the first time since I made them, and I didn't have too much trouble! In fact, a few of the rooms were easier than I remembered... I also found that you can play most of Flipbook upside-down if you skip the fourth rotator in that room where you fly through four of them in sequence. Doing so will make the adjacent room (Palindromic Stitches) much more difficult, as it's tilted 90 degrees - but it also makes getting to the (still stupidly hard) souvernir a little bit quicker! The room after that forces you to right yourself to even complete it, but doing so causes the remainder of the campaign to be upside-down. Still beatable, obviously.
Anyway, here's the one I just made. Nothing fancy, just a bit of fun.
http://dl.dropbox.com/u/1098605/Descent%20%28by%20Rox%29.rarI have to say... I really liked both your campaigns Rox. They were killer, but there wern't any bugs. Very good!
Nice names... and did I see a symbol for psychology in one of the rooms?
I definitely need to go through again and play them seriously. 
I died way too often to make anything of myself.
Thanks! The difficulty is definitely intentional. So far, the existing YYYYYY campaigns were pretty darn easy, I thought, so I wanted to have some hell trinkets and such in there, somewhere. I've got the good old Alpha, Omega and Psi in Treacherous. The latter because it totally looks like the letter Y, but I guess it's also the symbol for psychology as you said. I never knew that... Let's pretend it was intentional and I'm playing mind tricks on you.