Heres the answer... You have to kill all the witches in the coffins and then to finish the level go to where you came into the old monastery, walk towards the bridge to get you to the other side of the monastery, BEFORE walking across the bridge, stand on the left side of the bridge and look down. YES !! That is where you need to jump down to and finish off all the bad guys and hear the end of level sound, look for the glowing ball (at the very bottom)... Finally your finished with the most annoying level of the game.. Happy Hunting...

Update...Heres how to complete this level... Make sure you have killed all bad guys and completed everything up IN the monastery and down below the hanging cross(you can make the jump across that gap, took me like 8 times but you CAN do it)Once youve done that, climb back out of the cave. The door will open next to where you came in the monastery.You have to kill all the witches in the coffins/other bad guys and then your compass just stops working right?? No red arrow, no direction to go, I was extremely frustrated after about 1 hour of looking for something else to kill/do.. Then you see that door going down, FORGET ABOUT IT!!! It has nothing to do with finishing the level!!! To finish the level go to where you came into the old monastery, walk towards the bridge to get you to the other side of the monastery, BEFORE walking across the bridge, stand on the left side of the bridge and look down. YES !! That is where you need to jump down to and finish off all the bad guys and hear the end of level sound, look for the glowing ball (at the very bottom)... Finally your finished with the most annoying level of the game.. Happy Hunting...