One thing I found amusing was that he unloaded his entire arsenal of weapons onto the predalien...the combistick & whip, which were both completely useless, yet when he used his bare hands, he managed to severely wound it, tearing out its inner jaw.
As far as The Wolf dominating the aliens, it was a completely plausible situation, he was an experienced hunter kitted up from head to toe with weaponry, of course he was going to tear the aliens apart. Some of the scenes were obviously exaggerated though, such as the aliens not clawing him or stabbing him with their tails while he was holding them by the throats in the sewer.