Hey there yourself! Thanks a lot, I'm glad to hear (read) that you're enjoying CH! :)
Some of the hamsters are really not that easy to spot, even though they are quite obvious once you see them.
As for the Miko scene.. that is not unlockable anymore. I thought I had hid it but yeah. Checked the code just now and I did forget that.
It's a scene that I removed from the game for reasons and that is no longer canon. It will be unlockable at some point in the future as an outtake or easter egg of sorts, though.
Sorry for the confusion!