Really? They're pretty freaky the first time around, but they have very predictable walk patterns and are fairly easy to take out, on any difficulty. Also, did the tallboys make you "despise [Dishonored] with a passion"?The Scythian said:Tallboys, from Dishonored.
On the subject, I would say the heavy enemies in Shank on the harder difficulties. One of the reasons I didn't finish it. :/