It is pretty fun since it's really easy to own people and the graphics are actually fairly sharp at max settings. If this game came out a 3 years ago it would wow, but it still holds its own and runs well on my dated system.
The bad: it's noticeably a beta because there's bugs like getting stuck in wolf/human mode where you can't shoot or maul people, or people glitching under the map to become invincible and shoot you from anywhere. I'm also disappointed that the wolf form isn't more agile like you can't double jump, or scale walls, or jump from wall to wall effectively. It's a cool concept, but I wouldn't spend more than $20 on the full version most likely.
If I had to rate the beta I'd give it a 7.5/10.