I think the tentacle explosion has a limited range. When you see them not taking damage, they're probably just standing right outside the range of the boom. I've seen it happen to on occasion, so I wouldn't worry too much about it.
I think the tentacle explosion has a limited range. When you see them not taking damage, they're probably just standing right outside the range of the boom. I've seen it happen to on occasion, so I wouldn't worry too much about it.