Although the extra campaign is not as impressive or rewarding as the original, there are some nifty ad ons (read on)
Anyway, as Die by the sword did, Limb From Limb allows you to use the mouse as your sword or the VSIM keyboard (obviously, seeing as LfL is its expansion, duh) to have 'complete freedom of combat' Unfortunately, it isn't as responsive or easy to use as some would think, but it is still a neat control config. The game is hard, punishing you with a very difficult campaign. But there is always fun to be had with the arena... muhahah.
IF you are in to swordfighting games, looking for something different and difficult, track down die by the sword and perhaps this expansion and give it a try. You'll enjoy it