I'm liking this! My favorite games in the bundle are Dr. Moonlight's Happyworld and Xoo. They are the ones that show the most love and care put on them, in my honest opinion.
That said, I have a problem with Dr. Moonlight's. I can't seem to find the ghoul's weakness. I can defeat it after a long battle, but it costs me a lot of spent sandwiches and bullets. Is there something that oneshots him, like with the demons and the invisible man? Or that at least does a lot of damage to him?