I had two bugs (but after playing a lot!):
when I restart in fullscreen mode, I heard the sound of menu title but don't see anything, and click does nothing...
After killing four or five munchers, the game freeze...
(I don't know if it is usefull, but here is a screen: https://framadrive.org/index.php/s/159LkKmxbQX5B81 )
(Windows 7)