Pull lever 2. The hole is not closed but you must have faith to walk on it. There are 2 portals at the end of this level. Take the right portal. It will explore when attacked.
Force open a certain door to get the rotten food.
When asked to choose the right door. You'll be trapped inside if you kill him. Press a button on the wall. You may now walk right in. When your party member complain about dizziness.