http://www.youtube.com/watch?v=KnaCwNpDrDE&feature=relatedThere's a quick taste of the combat.
Basically, its an awesome-sandwich with awesome-sauce and ownage-paste.
You play a Craftknight who is trying to become a Craftlord. On the way you have to forge your own weapons, collect your own smithy materials and interact with other Craftknights all the while competing in a tournament to select the very best Craftknights for the position of the new Craftlord.
Overall, this is one of those games that you have to play no matter what. If you don't have a Gameboy, get an emulator. (I'd recommend Visualboy.)
In any case,
PLAY. THIS. ********. GAME.