The good thing when you have a streak of bad luck is that usually out of nowhere you'll find a fantastic item, the same as when you have a streak of incredible good luck, you usually run then into overpowered enemies that one shot you.
Looks like it's something hardcoded into roguelikes
Reached level 25 with my dwarf oozemancer just after completing daikara, and i have yet to go to Urkis , the temporal rift, spellblaze and the elven ruins (and graveyard, but i usually keep it for when i come back from east).
Nightmare difficulty really deliver more XP with the stronger monsters in there.
But i think i forbidden to myself my own fortress for a long while, after getting enough energy for the farportal room to unlock, i got the surprise to see that the enemy generatef in the room was a Worm that Walk .
On their own they're already very powerfull, but Oozemancers usually can deal with them fortunately.
Except that this one is really overpowered with additional Temporal skills (that i am not used to, never playing temporal classes) on top of the usual Worm that Walk (over)powers.
But what makes it impossible to beat is that my best weapon, the bloated ooze summoning does not work as it should, what makes the skill so precious is that it summon a few bloated oozes (3 at that point of the game for my character) and they use a rush ability to run toward the enemies they see (and they distract them enough so you can retreat or deal additional damage.
And in that case, once the bloated oozes appear, they ... ignore the Worm that Walk , meaning for unknown reason they don't rush toward him (if they did as they should i could stand a chance), and the Worm that Walk ignore them and still focus fire on me.
I lost a life despite all the healing skills because he was continuously paralyse me, as soon as i was out, *bam* another spell pinning me.
Eidolon does not give the option to spawn out of danger when it is the fortress for some reason, so i respawned in front of the Worm that Walk, but this time he only paralysed me once, so i finally managed to escape on a small hundred of health left.
While the thing has insanely more than 2500 health (huge at that point of the game, maybe it's related to the Nightmare difficulty)
I guess i'll need at least 10 more levels to be able to get back into my Fortress and destroy that overpowered beast.