escape from death

You are now sprinting faster than you ever thought you could run. You think you see where the top of the stairs. Finally, you have now outrun the vanishing steps and floor. For a second you were about to sit down to catch your breath, but then you look up to see you have found a door in front of you and a ladder to the other side of you that leads to a third level with another door. You quickly get up to think about what you are going to choose while catching your breath.