Cool experience! The player model felt really alive and it was fun to force the arms into weird positions.
The gameplay was very intuitive aside from the close button on the shop being extremely detached from the actual shop. Having the player make the shop unavailable before allowing them to start the action is a unique touch. It's almost like an "Are you sure?" but built into the theme/gameplay, which I love.
It was a little jarring that the zombies just completely vanish when you turn off the radio. They should probably stick around without more spawning after you turn it off.
Awesome job on this entry! Good luck in the voting/judging!