the game seems to go into a "silent pause" state when the character sprite is updated - just press Esc to bring up the menu and click continue and it should resume properly - worked for me!
There's supposed to be dialogue when the sprite changes! If this is happening to you, launch the game with the argument: "-l en-US"
This can be done by creating a shortcut and adding that to the end or opening up command prompt and adding it there. It should look something like "<path to game>\pizza_planet.exe -l en-US"