What a mess.
It’s more teen drama than science-fiction, and poorly done teen drama at that. When the science-fiction kicks in, it’s really just straight action, and poorly filmed action at that. All the while, everything is so damnably dark, literally dim.
The central alien-Predator hybrid concept alone is nowhere near enough to sustain an actual film. Take it out, and you just have a terrible, meandering, shoddily-acted, even more shoddily-directed mess. I give it half a clock, and a nuclear bomb.