This is an old topic, but I'm posting to let you know that the Puzzle Labyrinth is still active!
I've recently returned to the game and ran this with a few friends who missed out on the original launch. It's nice to know it's still available, as is the reward for completing it! Though it may be wise to have a higher level chaperone if you plan to bring newbies here. We saw a few lava fiends and lava spiders in the mine section. It was a great laugh as some of us were on alts, so we got to experience screaming in terror for our chonky friend to save us - but this might not be so pleasant for a new player.
Tips:
If you're coming from another server, I found it easier to sail in from the West. There's a highway that can take you straight to 'Puzzle Labyrinth'. (right click the major highway signs to bring up the route.) It's still possible to come in from the North, but you might have to wade through a good section of forest and ruin. ^^;
Bring plenty of food and water as you may be here a while.
Fall damage is real. Cotton helps if you can't find a healing statue, but if possible, save it for the castle section. There are fewer statues the deeper you go.
I hope you all have great fun! 😄