For Epic Hero 5, you need either more heroes or at least one more unit slot for each hero. Also, I think that when you level up a spell, the mana cost should go down as oppose to up. And lastly (and most obviously) the A.I. really needs improving, especially with the brain-dead pixies, they just charge right off into the middle of combat sometimes (try using pixies on level 8, you'll see what I mean)
Just for those who are wondering, to beat the second campaign you have to beat 9 of those "fearsowers" so you can get a fragment of the journeyman's stone from each one. After you have 9, just go to your inventory and drag the fragments onto a character. Then you'll fight the final boss.
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 "MARDEK RPG: Chapter 3"){kind=icon}
 "Epic War 4"){kind=icon}
 "One Button Bob"){kind=icon}
 "The Gun Game 2"){kind=icon}
 "Async Racing"){kind=icon}
 "Doodle God"){kind=icon}
 "Level Up!"){kind=icon}
 "Thing-Thing 3"){kind=icon}
 "Monsters' Den: Book of Dread"){kind=icon}