In playtesting, zombies seemed to be a little too strong and just destroyed everything in their wake, leaving no counterpart. This should help to have the zombies play with more 'brain' (pun intended) and coordinate, which door they are bringing down while also having to be careful to not accidentally break doors.
ADDED:
- Zombie door cooldown
- Zombie cooldown config option
FIXED:
- One Zombie can destroy doors alone