--- Added: Stage "Bay of Sorrows" (Boss of the fourth level)
--- Added: Pirate's Shop
--- Change: Increase Mage lightning's ATK.
--- Improve: Skill "Missile" easy to hit now.
--- Fixed: Mage nature's experience problem(leveling faster than other mages)
BTW: The fifth level (6 stages) will update before early june, if every thing goes well.
Thanks for your feedback and your support.