Battle In The Continental Dungeon
Now, one should understand something important about the Land of Gears Dungeon. As the name implied, it was a Continental Dungeon with a heavy focus on magically engineered monsters.
This should not be surprising, as no matter the era - whether old or new - Goblins and Gnomes were the supreme authorities when it came to Engineering and Magical Engineering.
As such, given these clues, should it be any surprise that the throngs of monsters that smothered the lab were all automatons of different types? Currently, most of them were common rat, domestic cat, and domestic dog type automatons.
Basically, the bottom feeders of the lot.
There were too many of them for Riveting Night or anyone else to identify them, so they directly got into battle. Even though Continental Dungeons were one big gangbang of blood, it was still a dungeon in the end.