To start a new game there should be a prompt asking if you want to erase your old game. I just made the mistake of clicking new game and I erased my old data. I was doing pretty good so I'm kinda mad that it was so simple to lose all of my progress. Please add a prompt when starting a new game so this doesn't happen again or to anyone else.
I find that the maps sometimes favor a side by making more shots hit the ground. Like a sniper will kneel down and start firing, but his shots hit a little hill that the enemy happens to be near. The sniper then misses constantly and the enemy, with no armor or weapon upgrades, kills them.
This game is just plain terrible. In the beginning you have to add stats to strength or you'll be overburdened. Fighting sucks. It's just go in circles and shoot. The maps suck. Walking around with no quicker way to get around, like a teleport or horse or something! The stats that don't boost hp or mp seem to have no effect at all. (Is it affect or effect?) The only useful skills are heal and the lightning thing. I gave it 2 stars for the effort that the developer claims to put into it, but I believe it deserves a 1.
In defense mode sometimes a person will get stuck on a back square and won't ever move forward. It makes you reload the game and start the defense stage over which is really annoying if it's difficult.
The bigger zombies take the shots even after they die. The death animation will freeze if you're still shooting them. So if there's a zombie behind them you have to wait until they're in view. When you have a group of zombies at your fence this can prove to be very frustrating.