Leo (leader of knights protecting white dragon I think) sends me to this place, called the "Ark", which I've noticed before but the door was always locked (there's also a chest with 100 gold behind it)
Inside Fabio (first guy you meet in town, behind a few random quests) is wounded and tells me to watch out for some stuff. (And yes, that is the best armor at that point, though by mid way I gain a level and can use some new stuff, I'm not going to run back to town and lose progress for it)
The dungeon itself is pretty weird, though it's basicly a bunch of rooms in this style (though all circles and some hallways instead of a decending staircase like this).
Also some rooms with these
No idea what they are supposed to be.
After fighting off some goblins with metal stuck in them (being hostile I can't get a good picture, though they look like the end boss) I come to this... thing
The mini map tells me there's an enemy on top, under or inside it. After looking around the room and seeing nothing but locked doors and the door I came in, I realize IT is the enemy and attack it. It goes down pretty quickly (in retrospect I should have read the health bar to figure out what the fuck it is), and doesn't even fight back. Inside it there are a bunch more enemies, just a bunch of skeletons and armored (possesed?) goblins (though over half had died by the time I could take this screenshot)
There's some logs hidden in the area, but I can't really care to read them (because of the bit at the start for why). They look just like normal gathering spots, though aren't marked on the minimap
I come to the final room and see two of Leo's subordinates injured. Cutscene and some skeletons, including two big ones with the same bits the knockback resistant Goblins had on
After the battle (which is easier than some of the fights in the dungeon due to the big guys filling up my force meter so I could spam light blasts at them) the two guys get up and the mage dude looks at the stuff around the room and is all "this is the find of the century" while the girl is all "you idiot, we were almost killed", but he keeps babbling before she hits him. Then she mops about being a failure or something (no screenshots here because I thought the skeleton dude was more important use of my clipboard). After that there is a warp to outside (the first one I've seen so far in the game. Most dungeons are short enough they don't need one).