I played through it again and found an Easter Egg on Christmas!
I also spotted a few bugs on my second run.
1) If you zoom in before interacting with someone / something, it gets stuck that way until you press the zoom again.
2) NPCs get stuck in their last expression when you say No Thanks, instead of returning to their default.
3) Using the zoom causes the inventory button to get stuck, as in it won't show the inventory. Getting any item un-sticks it though.
4) Clicking on the gnome and then clicking on the mall's entrance makes his sound effect play twice.
Also, I don't know if the animated spooky ghost GIF following the Saul's Employee in the dark corridor (assuming this is a PT reference, that she's possessed) was supposed to appear on its own and then change into her normal appearance, but when I walk backwards into the corridor, it just appears behind her "sleeping standing up" sprite. Which just looks kinda funny / silly. If that was intentional then I apologize.