There are three good things in this episode: The insert song, the accurate adaptations of the comedic moments from the manga and Potato Girl, voiced by the awesome Yu Kobayashi!
That said, this episode felt like I was watching a standard training episode from a shonen anime. My greatest peeve in this episode was that Eren’s faulty equipment was used to show that he was actually good with the wire-gear because it wasn’t his fault, it’s his equipment’s fault and he was able to come through despite the handicap. Faulty equipment being the source of the main character’s troubles and showing the MC as actually pretty good by being able to use it properly is a pretty old shonen trick.
I’m hoping that the next episode would be better.