Some bug fixes

I released a small update to the Plumber 2.0 version where I fixed all sorts of stupid bugs that arose only because of my carelessness and haste. But Gordon on the -32nd floor is still a bit buggy. I need to sort out my code a little bit.

• Fixed a  bug where Gordon attacked player without damage
• The sign that showed the logical variable of whether Gordon hears you or not has been removed
• Added the ability to hold the ESC button so that you don't accidentally exit the menu