It's CyainTheHell (:
No.
Ah yes, IRS and his friends were the ones. I have no idea how they even came up with 90% of their glitches.
Insane amounts of time, maybe looking at the code. We'll just call it dedication.
more like trying to get off the ground in anyway possible that was step #1 and most of the time if you could make it off of the ground usually via stairs (and occasionally using nades which the only two i know of and trust me i know pretty much every glitch in the game City and monastery) led to something else Ex.unreachable places by normal means.