1: An unlocked door may lead to level 2

2: The Hub can be accessed from this level. From the entrance of Level 1, head straight down the corridor, and stop at the door. Go through the door, then continue until the end of that corridor. Then, double back to the entrance of the level. There should now be a diverging path that goes left or right. Take the left. There will be another divergence. Take the right. Then, at the next one, take a left, and at the next one, take a right. As soon as the right path is taken, the path will lead to two doors, labelled A and B. Take the B door. Upon going through that door, the new room will look identical to the last one. Now, take the A door. This is the door that leads to The Hub. If any of these steps are completed incorrectly, like taking the wrong turn or not doubling back, one may end up somewhere completely random.

3: If you somehow encountered Entity 126 and got caught, there will be a small chance to not be killed and be dragged by it to level 6

4: Noclipping through walls that have outlets may lead to either level 229 or level 188

5: Rarely, falling asleep in this level may lead one to one of the bedrooms in level 1950

6: Finding and interacting with a black doll may lead one to level 7453

7: Noclipping through the other side of the walls without falling to the void will lead to Level 1.272