How to get alt characters?
I have open alt floors and I know that there are some wild mutants with them. Try to explain it as if you are talking to a stupid person / someone who does not understand the game at all. YouTube did not help ((for me it was too difficult to understand.
First you need a red key or a piece of it. You go to necropolis 2, there will be a door at the beginning and a skull with a cross (explode it, he will give the fool if you don't have one), then go kill the leg and take any photo, then press the fool and open the door (just close to it get up). Come in and clear all the floors. Further in the HOUSE location there will be a corridor on the left, mirrored right, in the left there is a hidden door in the same place as in the right (it should be highlighted if you take the red key to your hand) Press the key and the door will open, then go to the characters in this room and that's it.
I hope it helped even after a month