Tips on getting the medium badge: First upgrade the Fast Learner skill and fast reload. Next level up upgrade the Fast Learner skill again. The next level up upgrade money and save the other point. Next level up upgrade the fast learner skill to max. At the next level up upgrade the reload speed. Next level up save one point and put the other one into regen. Next level up max reload speed. Next put one point into the healing box and car fixing speed. Then get cash level 2. Then get cash level 3 and accuracy 1. Max out regen and repair speed. Max out healing box. Max out accuracy. Max out car hp.
Why do you not hit zombies when you're at point blank range!! You really can't hit anything without the crosshairs on it? I doubt you can't be that bad of an aim in your dreams.