Just add waypoints to the labyrinth. Mkay

I'm not actually here to complain about the design of the labyrinth.

But having content that needs to be run totally uninterrupted for an hour in an online game is delusional.

Here's the result of my attempts so far:
1st run: about 10 minutes in I get a server message that the realm will restart in 30 minutes. I hurry up, fumble and die.
2nd run: Screen freeze at first Izaro fight. Dead.
3rd run: Disconnect after first Izaro fight. Awesome.
This is where the labyrinth stops being fun for me.
4th run: Permafrozen in second Izaro fight. Add more cold res.
5th run: Starting to run through trash mobs. Get surrounded and die. Ok, calm down, lets take this slow.
6th run: Path blocked: http://www.pathofexile.com/forum/view-thread/1598857. Thanks GGG.
This is where I start hating the labyrinth.
7th run: Disconnect in second Izaro fight. Awesome again.
8th run: Wife calls from the kitchen. Time for lunch. Great, I wasted all morning on this.

Seriously if you want us to start over when die, fine. Still sucks, but fine.
But having to start over for a disconnect or similar screwups that are on your end at least half of the time is infuriating.