First off, to refute another review on here, you CAN shoot Terminators in the game. And you kind of have to, unless you're stockpiling explosives. That reviewer clearly didn't play much of the game.
When I heard that Teyon, developer of the not-so-great Rambo video game, had acquired the license to create a Terminator game, I prepared for a similar experience; an on-the-rails shooter with ugly visuals and chock full of voice clips from the movies. However, this game turned out much better, and honestly, I enjoyed it much more than Terminator: Dark Fate, the franchise's most recent film.
The game's story puts you in the shoes of a Resistance member in the midst of the war against Skynet, the very war seen in a few scenes of the first two Terminator films. And not to mention, this game actually ties directly into the plots of those films and is full of references to them, so one can tell that this game was indeed created by fans of the films. But overall, the plot here was nothing amazing, but enjoyable for Terminator fans. While some would say it's a short game (took me about 8 hours total, including side content), but I felt it was just the right length.
The voice acting is okay, I suppose. There aren't any standout performances, but there also weren't any that made me cringe. The graphics aren't anything to write home about, but they're a major improvement over Rambo's. There aren't any celebrity likenesses used in this game, so the "that looks nothing like Stallone" issue Rambo had was avoided.
As for the gameplay, it's pretty much standard-fare first-person-shooter. It's not a broken buggy mess or anything, but it can get pretty repetitive and monotonous, which I suppose is the main reason I didn't rate it much higher. That, and it's not particularly amazing on any fronts, aside from the fact that it is much, much better than their previous attempt at a film license. Speaking of that, I assume Teyon will do another film license next... I'll hope for RoboCop.