First, note that while you can create a psycho axe murderer, and create one very well, combat isn't intended to be everything in WoD. If your player runs around town killing everyone with axes, then the police are likely to get involved. Or a SWAT team, if he's really successful. Large numbers of people with guns can take down just about anything that isn't supernatural.

Also, my advice for WoD is: take a look at your PCs, and judge challanges based on them. WoD doesn't grant experience for killing X number of orcs; it grants experience for getting through the story. Thus, as long as the orcs were a challange - or at least appropriate - then they're worth the exp. And they don't necessarily need to be challanging in combat either - a corrupt politician or possessing spirit would be just as much of a challange, and one that an axe won't fix.