I definitely enjoyed the game and put in a fair few sessions of it during the trial weekend, however I'm not quite as keen as some above.
they definitely got the feel and look of the Predator right, controlling it felt so cool and all the key weapons were present and correct- again, feeling just right.
playing as the fire team often ran the risk of feeling like a very generic action shooter- y'know, the ones that gaming have been drowning in during the past few years. especially during the periods where you are engaging more with the AI bad guys rather than the Predator. generic soldiers with no charisma. go to this place, shoot this or find that.
what made it feel different was having to look up vertically into the trees. no other game has that feel where you are having to watch that as much as you are watching the ground for bad guys. it almost opens it up on a whole different axis.
I was also lucky in that the sessions I played felt properly tense at times. run ins with the predator felt really crucial and the rest of the time you are watching your back or getting paranoid. for me this felt like the movies. I also love asymmetrical multiplayer games and thought Friday the 13th was great in that regard.
they just need to make sure it's balanced right, that there's enough to keep you coming back (more levels, and more interesting levels would be essential) but the big thing for me would be giving the fire team some more interesting and engaging missions to do.