1: One of the few safe ways to leave level 3 is through the elevators, which often lead to level 4 or level 5, However, if the elevator is marked with "greenery" it will lead to level 931

2: Certain extended hallways in this level may lead to level 187, These hallways can be identified by a lack of pipes lining the walls and a noticeable decrease in temperature as one traverses the hallway

3: There is a generator-controlled door that will lead you to either level 4 or the finish zone (not a finish zone, not a end, its a trap)