A few things I think I've learned from Altar
1) No one will be surprised if a door is nailed shut from the inside even though there is no other access to that room
2) Apple developed a software that allows you to find the exact spot a fountain was originally placed
3) Metempsychosis can be obtained in at least two ways: a cut on your fingertip with a regular nail (lite) or a 100 pounds iron pendulum falling on the floor near missing your head (pro).