Second Patch(no more for the rest of the week I swear)

I may have broken my promise, but I care about your eardrums! Here are the changes:

• Added a sound manager to prevent sounds from layering, which used to cause an unbearably loud noise
  (found the solution for that here).
• Fixed a random sound playing after the loading screen.
• Switching from fullscreen to windowed mode no longer resizes the window.
• Picking up a previously acquired weapon now displays ammo accurately.
• Added the same tutorial totems in every upgrade room—no idea why I didn't think of this sooner (I’ve been a bit burned out this month).
• Adjusted the value of some bouncing flesh nodes.

With that, I’ll get back to my promise of keeping updates to weekly at most, unless something major comes up.