I try to make the puzzle at the liche champ and if I see it right, then there are 8 levers. 2 of them always teleport u out. So u have to activate the other 6 in the right order. That means, there are 6!=720 options...
I think that is to hard...to find the right 6 levers is easy, but to bring them in the right order is nearly impossible...even if u try it every 5 sec, u will need something about 1h to have it sure.
What do u think about that?
*edit*
And u have to make a system, that try all 720 options, without doing the same again!!
I watch people get it correctly quite a bit.
Trick is have a friend, 1 of you on 1 side, other on opposite side. Talk in guild chat or vent and correlate it.