more commands:
*tf_halloween_zombie_damage # -amount of damage done per hit
*tf_halloween_zombie_mob_spawn_count # -number of zombies in each mob, or horde
*tf_halloween_zombie_mob_spawn_interval # -time between each wave
*tf_halloween_zombie_mob_speed # -speed ALL zombies move at
also zombies occupy playerslots, so you can have 4v64 fights, and can't be effected by special effects like fire, bleed, jarate, or backstabbed, but can still be killed by bullets, melee, and explosives, and the map needs a NAV file for them to work
also killing them won't count as a kill :(