The difficulty setting was good in that the mana spheres were hard to click on. Also I think the "you are crazy this is insane" level is a bit too hard. Would love to see lightning or other spells implemented.
Never mind beat it in like 5 min and almost a cramped arm.
Just invokes now because is a necromancer, but is good idea for the future ^^
PD: i passed each difficult before post the game :)