So thoughts on the Demo...
So please read this after playing yourself...
Beat it on Normal with only a single rerun of a dungeon after Beth to get Momentum rolling, and i didn't have a problem with it.
I rolled the latter part of the Demo over by a Flame up all equipment Apprentice Beth, who did 200+ with basic scorch, Flame Wall was my answers to most enemies.
My loadout was...
Chris: Maid Puppet Knight, as a sort of Paladin, Melee + Healing Utility. Also Doll Events.
Lore: Loner Knight, Melee DPS
Beth: Apprentice/ Medic, healing and Magic utility, and Soon a walking FlameWall Nuke when i met any real resistance. Beth Became so strong that her getting transformed and then scalding the rest of the Party became the biggest threat endgame.
Chris never left the part at post 3 Influence, and he kind of absorbed most of it, other members never went over 1. So i never got to see the lost to the enemy mechanics.
Really liked the event tag system, one recommendation though, once you click on an event you should be able to choose which character you want handling it in the event, or in some way make sure you don't have to switch characters every-time you see a chest so you need to get your Loner to the front of the party. There's transformation mechanics meant to harm the player but play to their fantasy, then there is sub-optimal menu-ing that takes the player out of the fantasy.
The Artist you have has done a great job, no complaints there.
I liked Lore, but Chris and Beth need fleshing out, it's still a demo so there is time for that.
I wish in post Demo i could set my XP to the point where Dungeons could remain Challenging, I think Dungeons should have Level caps which level you below a certain threshold, you then needing Dungeon long upgrades, some of which then stay options permanently, would be better in a rogue like format. If there is no threat from enemies, then to get TF'd, which is the whole fantasy of this game, you need to intentionally lose, which breaks the fantasy.
I hope this was useful constructive criticism, and praise.