after reaching X-400 in Reruned Rooms Season 2, S-300 blocks the next door and he found you, next, S-300 teleports you to Stereotypical Obby and he fights against you, in order to get through his obby, you might hide in a locker from S-300, or hide behind an object so he doesn't see you, after that, S-300 chases you from the start, after escaping the obby during the chase, you jump off of the obby and crash into the warehouse known as the W-Section, and S-300 continues to chase you, after that, you run all the way to W-000 and slam the metal gate closed on S-300 and the chase ends, you might rest for a bit, and you should look at the door W-001 and you heard a strange noise, you walk up to Door W-001, and a ending cutscene plays after you open it.