Looking over the class, it seems pretty straightforward. I'm not sure that it needs any adjustment, other than the skill list and possibly the spell list.
Edit: Looking over the skills, looks like you just have to remove Intuit Direction and change Wilderness Lore to Survival. I'll have to take a look at the spell list in a bit.
Second Edit: Yeah, the spell list looks fine as well, though some of the Vile Darkness spells may need to be adjusted. It seems fairly obvious that the class is based off the ranger, what with the requirements (duh! Wilderness Lore there changes to Survival, of course) and skill lists. The ranger hit die has since changed to a d8, so that might be deserving of change, depending on balance. Personally, I think the mortal skin ability is more than potent enough to warrant the change, but that's not my call in this case.