Smart zombies= bad. Scientists and grennies are fine. Just remove the man hacks. Upon death have the grennies have a roll to fall in a way that may pull a pin on a grenade.
Flamer thrower zombies are not good if they use the fire in an intentional manner. Everything just being on them or something of that nature should be fine.
Here is a good example. Variations of bloated and spitter zombies. Chemicals mix within them and create a flammable substance. They bloat up and if they come in contact with fire. They roll a chance to explode(no shrapnel). Open air explosions diffuse reasonably but do harm, but in doors they may do more harm. Ear bleeds and blown ear drums. Collapsed lung or whatever.
Spitters can spew a flammable liquid, but it doesn’t have to ignite. Unless one is to assume their teeth morphed into flint or some odd ball thing for no good reason. But once again. Shooting them…uh haaa! Roll that chance!
