Level 3999, Level It's Over, all of them. They are all just false cessations to this escapade. But now, a real one has spawned. However, you must surpass forces that no man could even dream of prevailing against. A facade of instantaneous death, blocking the one genuine entrance to freedom a barrier.
Such way is also without entry. No door lies anywhere in this realm. Even if you can teleport freely to levels, you shall be thrown out, and if not, slain.