I have noticed that charms can determine if you win or lose when defending your Sacred Gate in Samurai vs Zombies Defense.
On the last selection screen before entering the match, list charms:
- Power Charm
- Lucky Charm
- Friendship Charm
- Wealth Charm
- Haste Charm
- Peace Charm
I seldomly ever get these and the drop almost seems random. How can I receive more charms?