Since "Attack on Survey Corps" is a fan-made visual novel (typically created by members of the Attack on Titan fandom and hosted on sites like Itch.io or Newgrounds), there isn't one single "canonical" version with fixed achievements. However, most versions share a common structure: you play as a new recruit interacting with Levi, Hange, Erwin, and the cadets.
from the steam room at sunset/night to satisfy the Mirror Man's requirements for her scene. Unlock the Reward attack on survey corps walkthrough