Note: If your hard achievements are not showing up, even after you've finished the game, try getting out and reloading the character. Other notes: I finished pretty easily using two mages and two rogues. (Alyss, Markus & Kane - aka Valar Morghulis from Game of Thrones :). General tips: Start off with enemy debuffs. Take out the lowest value characters first and build up two summoned characters if possible. Ignore enemy summoned characters and focus on the summoners. Freeze when possible and focus on unfrozen enemies.
This reminds me. Whatever did happen to the promised launch of Dungeon Keeper III ? Oh yeah, and like everyone else, I vote for an end to multi-players here :)
Found a pretty good archer strategy: Max out your speed. Obtain "natures grasp", Explosive shot, and steady shot. For powerful enemies, slow down with nature's grasp, run away and get a couple of shots in. When the enemy gets close, slow down again, run away, and shoot some more. Takes a bit of time but worked. (for multiple enemies, simply use exploding arrows, run away, and repeat.)
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