On the 7th Realm, there are supposed to be five hammers to know down the wall...I located four of them & used these to start taking down the brick wall; then went on to locate other items...then I located the fifth hammer however whenever I tried to use it on the wall, I could pound on a few upper bricks & nothing happened and since the other two rooms were checked off by this time, I could not go back into them...

Now what can I do.... I cannot go back and am unable to move forward....