It feels a little bit like your 'luck' for a given level (or maybe even the whole game, when you're creating characters?) is predetermined. Maybe try starting the dungeon again or even the entire game? I haven't had anything like that, my mage has mana 90% of the time and I'm not getting pummelled by ambushes all the time.
Hnn, I guess I'm in the middle. Don't have any real difficulties most of the time, never wiped, but sometimes it can get really hairy due to the importance of lucky throws in the game.
Just finished a red dungeon, at the end a weak boss and some archers. Ok, so I begin my adventurer hobby, killing things, and take some guys out of the equation. The archers hurt but I manage. End turn, dice roll... 6-7 mobs added.
I begin to feel some heat and take a little beating but at this point I'm more pissed at the possibility of an ambush in a boss fight than anything.
I manage, kill the boss, some archers left to kill, end of turn... 6-7 mobs added.
I came back from it in one piece but bandages were thrown like there was no tomorrow.
All this to say, when the game decides to troll you, it do it right
Oh and I retract from the "why make an ot this late", if today is of any indication, there is really a demand for it. Pretty cool to see.