Originally 3/5 due tosome glitches and getting lost a few times, but upped to 4/5 because someone said this idea was stolen from World of Warcraft. Honestly, stupidity against this game only makes it more appealing.
If the complexity is what draws you to this game, then you may want to check out Phun! (Yes, spelling and exclamation are part of the name, I think...). Many more options, and may have given the idea to make this game.
If you have trouble keeping an army, don't use one. Female Far East Empire character can solo easily; Buy the best shuriken available and try to go for the third throwing ability (of course a +10 shuriken with an Occult powerup, kills 2-6 people in a throw).
A general tip for melee fighters, try to put your back against an object facing the side you start at, and let them come to you. Reduces ranged damage taken considerably.
The "One hit kill move" of the Far East Empire is easily beaten by removing all of your armor; compensate with potions if need be, but you shouldn't have any trouble. With an armor rating of 0, they do 0 damage; this should make up for the extra damage taken by other units (Their ranged/staff units).