Pleas number the rooms on the maps to correspond with the numbers in the module. I can figure it out eventually through terrain features, but this is a pretty basic element game designers have been doing well since the seventies that we seem to be failing on today.
The module had an excellent opportunity for roleplay in the nightmare sequence. had to coax a couple players into the game, but once they accepted the premise, it became very fun, revealing, and a little scarring.
Warlocks continue to be poorly represented in the tier 3 modules. Given their stated level, their spell choices and other stats, its alittle shocking that these individuals survived poor choices to reach their level of power. I'd strongly suggest DM's Guild review the warlock stat block and fix it (I'm going to do this for my parties as a 17th level caster should be wiping the floor with them).
The scaling recomendations in this module were absurd, my average party crushed this module at the "very strong" level. Even with the weak legendary actions, action exonomy made the final boss fight a joke.
My players thought the abomination was a lich, I almost fulfilled their expectations, maybe making this a good fight.
The module had a lot of potential, but the details were lacking.
[2 of 5 Stars!]