Nice work there! A hell of a level; I remember the part climbing down the stairs in the lava quite well - one reason I was well happy for you to take on these levels, so as not to have to play them through again myself :). Part 2 is rather a crapshoot, and the Rampancy vid for that one featured rather a lot of deaths - clearly there were also issues with the fact that the level becomes impassable once the lava is up.
That secret is pretty convoluted - I had no idea, and is that terminal even longer than part 2 of the hex map code from Aye Mak Sicur? I got partway through reading it, but felt I needed to do some work lol :D. Another time.