Henry says:
if some lich wanted to be sure you never found his remains, he WOULD probably design a place like this - no answers for the traps, death every turn, multiple screw-jobs faking you out all over the place, and you're not done even when you think you are.
Whitey said:There are things in there, that look like coin-toss situations, but there are ways around them - [...] If a high-level party doesn't use every resource they've got, and use them wisely
RFisher said:It has always amused me that half the people who've played this module say that it's nothing but random death with no point or possibility or success except by luck, while the other half claim that it is simply a challenging module that really makes you think.
Odd. I've often wondered why this is so.
I think this may be part of the answer:

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.