Advice for the Diablo battles for Warriors: In the potion shop, takes every potion class for HP potions, then stock up on 30 or more super hp potions. Should make the fight much easier. I recommend leveling up only the red option when leveling up, and ignoring every battle option except for Normal Attack and Power Attack. About 150 MP from training should be more than enough to get you through the game.
The Ice Clan Leader was tough at first playing as a Red Fire mage. Use high attacks when their SPECIAL is at 9 or so, they'll then freeze your high attack, wasting their SPECIAL.
To all the people that see this, just look up this name on Google or whatever search engine you please and you should find one that actually loads. The game is a fairly unique Tower Defense game that can be very fun. While this game that was uploaded to Kongregate doesn't load and may have to be deleted as it isn't even playable.
 "TextRPG: The Rise of Diablo"){kind=icon}
 "League of Legends: Nexus Defence \"Beta\""){kind=icon}
 "Mytheria"){kind=icon}
 "Pokeball Breakout - Pokemon"){kind=icon}
 "Book of Mages: The Chaotic Period"){kind=icon}
 "Computer Evolution"){kind=icon}
 "Cat in Japan"){kind=icon}
 "Fancy Pants Adventure: World 2"){kind=icon}
 "Backyard Monsters (removed)"){kind=icon}
 "Pokemon Tower Defense 2"){kind=icon}
 "Pokemon Tower Defense 1"){kind=icon}
 "Infectonator : World Dominator"){kind=icon}
 "FEED US"){kind=icon}