Let players be able to get back to labyrinth when network interrupted unexpectedly.

You should not assume network situation is always fine and never interrupt all over the world.

I lost many end-game lab maps because of network interruption from server.

Besides, sometime this game also crashes unexpectedly, and then I lost a map again!

Cancel one-time-run mechanic from labyrinth.

Or let player have some chances to get back to lab if his leaving is not caused by death.

Or let end-game lab is accessible unlimited.

Or let NPC sell end-game lab map cheaply.

#FeelsLabMan