Visit the Dark Hall, has completed the first ground, and instead of being run in the gate, jump on the texture on the penultimate site, located nearby, about 15 seconds (it can be seen from the first). Poke at the gates and appears on the last stage Dark Hall.
If PB feyk, 1 skill, and all - Dark Hall passed for 2-3 minutes. If so, then about 5 minutes from party dependent
Have fun
