Celestial Fury is probably the best backstab weapon, I've hit for over 150 points of damage in a single blow. Hiding in shadows is not enough for a succesful backstab on all occasions as the intended victim may "hear" the attempt and the backstab will revert to a standard attack. It's important to assign points to "move silently" as well as "hide in shadows" to increase your success rate.
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It's bleedin dark down here, slippery too.
Man, that's a pisser.
