Right, well with the notion that "Xtinction: Predator X" (aka "Alligator X") is in the creature feature genre, then chances are that you are in for something that you have already seen countless times before and that you are in for a movie with hilarious special effects.
And true enough, "Alligator X" is just that. It offers nothing new to the genre that hasn't already been seen in other movies.
The story presented here is a very bland and generic storyline, even in comparison to other story lines in this genre. A genetically modified creature is on the rampage in the wilderness and it is a up to a small group of people to stop it, of course.
"Alligator X" has some questionable special effects, like so many others in the genre. But that is actually one of the reason why we keep watching this genre, isn't it? To see how laughable and pathetic the creature turns out to be. And the CGI in "Alligator X" wasn't impressive, let's just say that. I was especially impressed with how a big creature was able to not cause ripples on the water as it moved about.
As for the acting, well it was as to be expected for a movie in this genre. So don't hold your breath for a thespian experience out of the ordinary. It was, however, sort of fun to watch Lochlyn Munro run around here and pretend to be an officer of the law fighting a monstrous alligator.
The characters in the movie were fairly generic, with the heroic protagonists and the stereotypical villain and goons. There wasn't much of characteristics or details added to these cardboard cut-outs, so you don't really care much about the people in the movie.
There are far better movies available in the genre, and once you have seen "Alligator X" then you are very unlikely to return to it for a second time around.
