You know what makes this hard, when my spell has a cool down when I slash. This means sometimes I press the spell and nothing happens at all when I'm busy pounding enemies.
After reaching level 15 in the first area, I realized that this is the best combination. Get dual weld weapons to create a fury of slashes that kills anyone who gets near. Get earthquake to stop those guys that get behind you. Last, get 5 potions because you get hit too much for other items to matter.
Wow, I keep failing levels even though I switched strategies so many times. I simply keep getting hit too many times to matter. (fireball and assassins and chargers)
Wow the hard badge is level 10? Seriously I came back to get the badge at lvl 28. It actually is pretty easy when you can kill the boss in under 2 seconds.
 "Siegius Arena"){kind=icon}
 "They Took Our Candy"){kind=icon}
 "Monster Saga"){kind=icon}
 "bit Dungeon"){kind=icon}
 "Jacksmith"){kind=icon}