Easter Egg: Get the bone from the alcoholic corpse and use it on dog in the shop with the mask, you get a string you can combine with the mask to make a new costume.
Genesis 19:8, as highlighted in the Bible and password to door reads: "Behold, I have two daughters who have not known any man. Let me bring them out to you, and do to them as you please. Only do nothing to these men, for they have come under the shelter of my roof.”
I'll let you work out what that means.
Easy way to get last badge - don't be a pathetic cheater for the first hard badge. If you haven't got the brains for this, go shoot some zombies or whatever other people do.
The ending is poor. When you reach the bottom you find a magical pig who tells you to go back to the top. WHen you get there, no matter if you saved or killed the pig, the game crashes and tells you no present. Perhaps there was a cake in the box.