This is one of those rare occasions where you can play the AVP game, and still enjoy it. In my opinion, it was kinda enjoyable, but the bad things is... it sucked for me.
Now, let me explain. The idea to create a new AVP game (even in 1999) was a good thing. The design in the game is good. When it comes to the final look of marines, aliens and predator. Of course, it was taken from the films, so basically, the design from the movies was well adapted into the game. Seriously, the developers did a good job of putting exterior and interior design, which is inspired by the films. The graphics, for 1999, were swell. To mention that Half-Life was released a year earlier, or so, you can clearly see that the graphics are pretty much the same. The sound effects were great and the music score - I think that was the best. A really high-voltage in action sequences with Predator and Marine, and very creepy and atmospheric with Alien. But, that is why I only give it 5 stars.
Here's why it sucked. The controls. The controls are unbearable! When you, for example, run so fast (with all three campaigns), the entire situation of your character becomes uncontrollable. The enemies, sometimes jumps out so fast, so you collide with them first, before you open fire. On occasion, you can't even see who, or from where, is attacking you. Even when you are walking, you basically slip. Yep, the surface is pretty slippery. And when you are running... that's even more terrible. This is one reason to get your frustration high. The next is limited game saving. Why can't I save my game normally? I never found it normal to have limited saving slots. That makes the game intense, sure. But not in the gameplay or atmosphere, but rather in frustrating way that you have to count your saves. And all that while you are moving like a Road Runner on a slippery surface. The atmosphere was not that good. I mentioned that the design is good and well adapted, but when it comes to the switches and buttons, or maybe vent opening that you need to brake to proceed... there were moments when you just can't distinguish one from another. Especially in Alien missions. That was even more frustrating. The game has a lack of story, but I can understand it, in a way. And you can clearly see that the developers wanted to devout themselves to other stuff, but not in the story. It was an older game and maybe, they didn't have enough time, or resources to put a more complex story. The plot, or missions are given in marine (and Predator) missions from a computer screens where you can hear and see your superiors spewing commands and giving you guidance through level. Pretty solid idea, but in all three campaigns , those dudes on screen were such a bad actors, and with their weird accents, it just makes it more funnier.
At least I won't deny that game play is pretty cool with all three campaigns. You really feel like a Predator, or Alien... but not that much. Because sometimes melee attacks, or some of the weapons are bad, the targeting is bad with Predator, for example.
So, to conclude, the game has a lot frustrating moments, and it basically repels you. I remember the first time I tried to play it... I was instantly repelled. But, years later I decided to give it another shot and I beat it. But, I wasn't satisfied enough. So, if you are the fan of the games and movies, this is your thing. But I would rather recommend AVP 2 (2001) and AVP (2010).