you should have fought two ghost warrior / wizard and looted a crystal from them. In the room with the stairs on the wall there is a socket that the crystal fits and the stairs will rise. You can only use one crystal so the idol you get will select wiz or warriors path. Not much difference to choose between them.

How do you get to the warriors spirit idol, the stairs go down before I get to them? I`ve tried runnig and jumping but my jumps only go about half way up.

If you feel like the extra work, you can also drag barrels or crates back here and stack them til you can climb/jump up to where the lil idol is... of course you'd only have to do it once, since you can use a crystal to get to the other idol.

This way you will get "extra" treasures, that you would not receive if you only did one side~ it's up to you~

dh