Honestly if you think this is bad you should try Zombie Zone, which is the same thing but more miserable and with no direction.

Anyway I speedrun this. No I don't know why, it's kinda mesmerizing. There's no plot, there's two music tracks, and they reuse the same three maps for the entire game. The hospital is actually the worst thing of all time. At least you can beat this game in like 40 minutes.