Board Thread:Suggestions/@comment-26043932-20151212051920

Instead of modifying the amount of zombies, I think difficulties should modify the damage tables, spawn rates, and etcetera.

NORMAL: Default values

INTERMEDIATE: -1.5 Damage, Increased spawn rate for more rare zombies,   +$125 and +75 XP

ONSLAUGHT: -2 Damage, Increased spawn rate for more rare zombies, +$150 and +125 XP

INSANE: -3 Damage, Permanent tag on survivors, +1 minute, Increased AI, +$250 and +175 XP

HARDCORE: -4 Damage, Permanent tag on survivors, 0% spawn rate for the common zombie, +$300, and +225 XP 