There was a glitch for me where if you went to the hospital, it would say: "You have sent to the hospital, you sick for 2 day, you pay $100 for it." and time progressed 2 days... but I still had all of my money.
I love how if you don't want to battle the next guy that comes up, all you have to do is click go after the first battle really quickly and the click go when you get to the next guy. :P
Upgrade everything, get all achievements... never escape the endless cave. You go into a corner and just let the floor rise and you fall through, only to find out that you come back to life... atleast blobs are with me.