Heres a strategy. Be Night Elves, unlock whirler, then only buy Halberds. I beat the game with +5 Halberd.
Also, once you have whirlers, go for the demons as quick as possible.
Kirby music ROFL! Dun dun dun...Dun dun dun dun dundun dun dun..
Aw... The programming really sucks but the ending is so happy, and everything is so cute!:D