Its seems other than watching people die grusome death by trap there nothing more eh...
Even the background of story kinda standard shitty human and not all demon is bad type
Always find it "fun"(bad wording probably) To see the typical trope "demon need to be killed because they are not like us" but still like To rape them (Well atleast its what it seem To me when they say it Will be a fate more than death and with little of cloth ch1 p46)(sorry for the probably lot of bad english)
He is that DM that when you clear his traps would say that the treasure you looted was cursed you need to make a constitution saving roll, after already leaving the dungeon.
His traps are not clever, they are just a bunch of them.