There's a trap in Dwemer ruins that one-hit-killed me.
What really annoyed me is how stupid the trap is, it's totally silly design. It's not even a normal trap, just stuff right in front of the door, and when you open a door mechanical things jump out and start slashing you. It's silly because until you trigger this trap you have no idea what's going to happen, unlike the wire trap on the floor which makes sense, and the rocks. These traps I like. But some mechanical traps are out of place. I don't like them, I don't think they fit in at all. When I will want high-tech stuff I'll play Counterstrike or Starcraft, not sword-n-sorcery game.
Either Oblivion or Skyrim was your first Elder Scrolls game obviously.. you're unfamiliar with the Dwemer.
The Dwemer (Dwarves) were a lot more advanced than the other races, they didn't worship gods unless you can call logic and reason gods. They built machines, and had advanced magical theories. They're basically a steam punk society based Elf while the rest of the world is swords and sorcery high fantasy.
However a long time ago, they disappeared almost entirely (1 was left on Tamriel) and nobody really knew why. They just suddenly as an entire race vanished before Indoril Nerevar's eyes. They had been working on magical theories that attempted to tap into the divine and make the Dwemer into living Gods. They built a Robot God that would house all their souls and they would be the God Anumidium (spelling?).
However something was miscalculated and the entire race vanished instead. Whether they were teleported to a different dimension, completely annihilated, or they themselves became spiritual Gods by achieving CHIM, nobody really knows. The Anumidium didn't work however, and Dagoth Ur and the Almsivi used their tools to make themselves into Demigods.
Anyway the Dwemer have been around since at least Daggerfall in the series (were they in Arena?) and they've always been something of a mysterious advanced race that disappeared and left behind a bunch of odd things like robots and mechanical cities.