Bring back zombie spawn protection. If the zombie attacks someone , remove spawn protection. Revise the howler. Possible options: Self Damage with each scream. Lower Range Lower Damage Charge up screams : ( think of breathing in all that air ) Hold the button down longer for a more powerful scream. ( would slow you down ) A light scream would do light damage/lesser range/no self damage A full scream would do normal damage/normal range/light self damage Supply Crates need a major tweak: Try giving weapons based on score so you can't get a shotgun with out trying Make supply crates give a greater sense of relief by increasing the ammo regn timer. That way ammo supply is also strained for campers.