Ah Puch has the power to bring Itzamna back to life. Hell knows he hates that he's anywhere near him, so he is willing to help you get him out of the Underworld. But to get to him, you'll need special bells. And you have to pass hellish trials in several locations to get them. Blackwater is one of them. Are you up for it?
In order to get the Ah Puch's bell Diggy needs to stop the oil leakage from the four pipeline systems:
1st pipeline system
2nd pipeline system
3rd pipeline system
4th pipeline system
Once Diggy fixes the pipes the ghosts of the sinners doomed to forever drown in the hell will reward him: