Awesome game. My only suggestion maybe: Everytime you get an health upgrade, make the king's armor look better/cooler. Or just make a seperate armor upgrade skill that makes you lose less health (1/2 hearth for example)
If you're low on cash, keep farming the squid boss. He keeps summoning adds, and if you got the money upgrades, you can get a lot of money this way. Hope this helps!
The game gets real laggy the longer you play. It's quite noticeable, as the game animaties are quite fast and it feels good, but after a while everything gets sluggish and attacks take a lot longer than normal. Not sure what causes this, but it's very annoying.
Completed this game as a warrior, never died. I always picked passive skills with the exception of windmill and another skill. Great RPG. Not too hard (atleast as a warrior) and not too easy at the same time :)
boom. 10 points go to you!