A very well done survival horror for game boy, you could even say it's an old computer game. Leaving the music aside for a better mood was pretty brave, I'll admit.
But I think there was a change from the “friendly” theme to “friendship”, because other than the dogs, there's no way to tell that the game is friendly.
I just had a few issues, very confusing levels and nothing stopping you from running through the zombies. Zombies also latch onto items they drop.
Apart from that, it's a great game, the errors I found are justified by the game jam time.
Edit: I saw that there is also a problem related to "advance dialogue", for that I recommend only updating when a shot or damage is taken, otherwise there will be several useless updates that can disturb the speed of the game.