Said the bug truth found his xylophone!

Fixed a bug where Xuan Cheems couldn't use skills when they didn't have a weapon equipped.
Slightly weakened Dao Dao Cat.
Fixed a bug where unloading all equipment in the main city would remove the equipment of the unlocked character as well.
Fixed a bug where the Corrupt Forest would not show the battle background.
Slightly increased the difficulty of mid and late monsters.