The trauma inflicted in these first two episodes sets Eren on his path of vengeance. His vow to "kill every last one" of the Titans is the emotional engine that drives the entire 25-episode arc. Without the absolute devastation shown in these opening chapters, the stakes of the later narrative would never have landed with such impact.
This guide provides a comprehensive overview of Attack on Titan Shingeki No Kyojin 1-25 -Attack On Titan Season 1--720p- 13
The user keyword specifically includes the number . In the context of the file naming conventions often seen in anime archives, this could denote the thirteenth episode, or perhaps a file batch designation. However, narratively, Episode 13 is The trauma inflicted in these first two episodes
Indicates a video resolution of 1280x720 pixels (Standard HD). this could denote the thirteenth episode