SWEET! I did not know that.
There's a few threads about it around here somewhere. The difficulty is severely ramped-up for the US version. Enemy locations are the same as far as I could tell, but they deal out more damage and take like 3-4X as many hits to kill. And they don't respawn the same way they did in Exile 1, so you can't sit in place for hours with the attack button held down.