You should probably understand right away that Thief is not an action game. You're not going to go in with swords a-blazin', hundreds of flasks of explosive liquid, and psychic powers, taking on an entire army at once. In fact, Thief actively encourages you not to fight, and in the game's challenge modes it detracts points for engaging in tussles. This is Thief, a tactical game that can actually get really tough compliments of its customizable difficulty system. Like, really, really tough.