i did it on normal: 1imp atk/2 suc (1 atk & 1 sup)/ 1 harpy atk/ 1 lamia atk/ 1 driad sup mass heal. + fry pans to every one if u lose. Still far from 100% challanges. Unlocking imp atk = win, she is op(first 3 locations on hard + 1 random fight, i believe). By the time u beat 6-5 u ll be be completly fed up with all animations, so i see no reason to play after 3d location... Gallery is unlocked after 6-5 + training mod and crazy difficalty. No idea how to unlock the last top left location (chapel or heros castle, whatever).