Aye use evil eye shroud. There's a macro for lazy afk shroud leveling on MQ2 site (free, no member required) so just stock up on the potions, start a level 5 shroud (imp wizard), then begin a single play instance in Forgotten Hall. Come back in about 1 hour, you should be very close if not already unlocked the next shroud.
Then use the high level evil eye (level 70 max IIRC, I think minimum is 55 for the charm), be sure to use run speed in case the attempt fails so you can outrun tain, try to charm the foreman, give him the jade quickly to get the hammer (skip dialogs) then run to PoK book. It worked on my main who is max KOS in OT and also on my level 62 monk.
You can safely skip the useless dialogs and just give the jade so it's much quicker than trying to talk to the foreman.