Finally got to play the game properly.
Did two play-throughs of the first mission. Marines and Aliens turned into a slaughterhouse in one corner of the map leaving the Predators to play cleanup and win the game. Predator player never got a scratch on them; marines couldn't complete a single objective.
Second playthrough, one Predator dead by turn 2 or 3 and the other one down to one wound; marine player got a few lucky dice and card combos and managed to complete their objectives before I could run them down as the Aliens.
Really enjoyed it! Had to download some quickstart guides cos holy shit the rules are laid out in the worst way, but other than that, it was fun.