I will give this a 5/5 in the hopes that a high ranking will encourage a better translation of the instructions (as it stands the rules are in LouWeed's comment, not the game instructions).
By allocating all stat points into magic from the start, and with a full set of neptune armor, the trident, and moon rock equipped the boss is extremely easy. Just dispatch his minions with AAS combo juggling (no mana usage) then use the beaver dash through him about 50x. At level 30 there's even a few extra dashes just in case you fail to walk across him properly.
This is a ridiculously overrated game. While sure, the skillup tree is nifty, it's just a poorly made ripoff of FF X. It's far too easy with too much traveling (and therefore map reliance), but no hotkey for the map (not the menu, the map itself), no hotkey to close the map, stereotypical quests, an unoriginal boss, not one unique aspect to set it apart from others of its type. The only good part of this game was the intro. There wasn't even a room reset/panic button to account for any possible glitches, like the ones i see complaints about.
This is without a doubt the worst game i've ever played, and it saddens me to see that kongregate's players deem its creators more worthy of $1500 than Hand of War 2, and a better game than EBF3/cursed treasure. 1/5 (only because i couldn't give it a 0/5)