Sounds like the joystick 2nd button reader code is having issues. You can use the F3 key to disable the 2nd button reader, then the joystick should work fine in 1 button mode.
You'll need a Commodore 64 emulator, and I recommend VICE as that's the one I use.
After running VICE, go to the File menu and select "Attach cartridge image...". That opens a file dialog. Select the downloaded Briley Witch Chronicles .crt file, and that should attach the cartridge image and run it. Then, enjoy the game!
You'll need a Commodore 64 emulator, and I recommend VICE as that's what I use. The .crt image is probably the easiest to use as you just need to attach it as a cartridge in the emulator.
The game is an EasyFlash cartridge image, so won't work with an SD2IEC device. For testing on real hardware, I use a KungFuFlash cartridge. Else, it'll work on any emulator (including TheC64 mini/maxi).
EDIT: just checked the game, and that fox shouldn't be there at all. It won't affect the total, so I won't be releasing a fix just yet, but I've fixed the map so it won't show up on any future releases.
