I just finished the Caer Falcarn dungeon, a collection of 6 custom maps made by Tactical Adventures to showcase the Dungeon Maker tool which is available on the Steam Workshop. It's a 4-6 hours dungeon that, unless I missed some optional area, ends the moment your characters reach level 5. I played with a Paladin (Oath of Devotion), Fighter (Eldritch Knight), Cleric (Battle), and Wizard (Greenmage) and I have to say it was reasonably hard, to the point that probably even
Lacrymas would be able to enjoy the encounters, provided that he sticks to using each campfire only once (twice if things go wrong two encounters in a row). There are many dull encounters, but some of them have a good balance of meatshields, melee threats, and dangerous casters.
Anyone who enjoyed the main campaign should give it a try, at least to see what the Dungeon Maker tool can make (which, admittedly, is not much).
Speaking of the tool itself, as it was clear from the beginning, the only way Tactical Adventures has to give this damn thing a purpose is to implement ways to add custom monsters, custom behaviors for each monster, and a strong and versatile scripting tool. As of now, the total absence of scripts only allows creating very linear dungeons with nothing more than combat encounters, but the abysmal size of the monsters roster definitely doesn't give enough freedom to do anything serious.
It was clear from the start, but this thing PALES in comparison to the module editor of KotC 2.