Find a room with a giant mirror, and then do that coffin without Rinny.
Rinny has to take your place at the mirror.
Has to, else the route ends abruptly.
Shop of horrors needs you to 'test' their products first, remember the manor? That little minx you possibly tied and maybe used to your hearts desire, she has a little test for you; you can buy them from her afterwards.
The hobo with the fake pass, you need to progress Fawn's route for that he will be at the hobo market, the place right at the entrance of the slums. To find him you need to go to the hobo that asks for food, give him food 4-5 times till he tells you about counterfeit passes; then get a massage from Lin.