The Assault

Im stuck trying to find the 2nd switch.Have just busted the gates down with Coryools beers and been and flipped the first switch then i came back and headed down as per the walkthrough and found another building.After the surprise fight i go in the building and climb the stairs and go out through the door and in through the other door and fight some monsters then when i pass through 2 pillars i end up in a portal going to the Hall of Madness ??? have i missed something somewhere how am i to get to the top of this building to flip the switch ? without it i cant continue the game


