When the zombies die they have a chance of resurrecting, but I really think they should lose their turn if they die and resurrect. Just seems that would make it more realistic to me.
Overall I really like what the developers have done. Yes there are some big hiccups still in the game and some are major issues, but this is a new game and developers need time to correct issues. So if any players are reading please post useful info to help them make the game better. Thanks.