How do you get iwhbyd skull

it is really simply in fact.All you have to do is jump through the rings until after you kill truth.After you killed him and the flood jump through the rings in this order
[1 being closest to the begining (where the giant flood are with you)and 7 being the closest to truth.]
4 6 5 4 5 3 4
if done correctly the rings will light up and the skull will be on the bridge closest to truth
cerealkiller666 out...