Hmm, I beat the game in a few kills- like maybe 10 zombies? - was expecting another level or some new challenges. Replayed and then repeatedly got a game over after shooting 1 zombie. A bug? I think its a fun concept.
You're right, I really noticed it too, but I had a very short time left on game jamsa, so I posted a very incomplete game, I'll definitely fix them and take your comment into account thank you