lol, the judge fight in Fort Joy looks like it was deliberately staged for 'cheese' by the devs. there are several super-heavy paintings there that can be used not only to block the doorway to control the flow of enemies, but also to hit them with telekinesis. that can do 70+ damage for 1 AP with no cooldown (small tip: you can rotate objects with the mouse wheel when moving). also, there's a locked cell accessible to teleport that only the judge and the monk can escape from.
as i understand, at higher levels HP and damage quickly outpace all environmental effects, which is a bit sad IMO. i don't remember level jumps were so huge in DOS1. were they? it was surely like that in Larian's Ego Draconis. 1 level difference was already very tough, 2 was borderline masochistic, and i think after 3 levels or so you literally couldn't do any damage at all. i must say i don't like this system, it feels very cold and soulless, like everything is defined by its level number with little leeway.