There's a pattern. I forget what it is, but the hint is written on the wall, literally, in blood. Go back to the corner you turned just before you got to the levers and look at the wall - I beleive the first level you have to hit is #4.

And if you hadn't noticed - there's a certain number of spiders below each lever that corresponds. Took me a minute to figure that out when I was playing at 530 in the morning on launch day, lol.

There's a patch that apparently was just released for everyone who was having problems with their levers. Mine was frozen too but I'm not at home and not able to search for the update to verify.

What that other guy said, there are numbers plastered on the wall in Blood I think it is 4231 or something like that. Hang out by the levers and its on the cave wall to the left you can't miss it.