Firstly, let me say that I’m really enjoying the game so far!
I think the game timer is a bit short, I don’t think 15 minutes is enough.
There’s been far too many times when me and my Fireteam was fighting the Predator, and it would be a back and fourth gaining ground/losing ground scenario.
He would down a Fireteam member/members and then he would get badly damaged and retreat. Each of us would have to regroup and heal/gear up again before the next battle. It would be a back and fourth intense scenario, while fighting off the Predator and cautiously traveling to our objective.
However, the game ends so suddenly because of the timer just when it’s getting good. In my opinion I feel the timer should be extended to 20-30 minutes or so.