Sloan had some experience with laser tag, but Milo didn't, really. What he did have, though, was an expert ability to find little areas to stash himself away in, and from these vantage points, he was able to score a good number of points. He was also pretty fast, and so was able to dash away from the enemy team. At some point in the game, when he and Xander were near to each other, and everyone else seemed to be at a distance, he made a little comment like, "If Laser Tag were really good, there'd be a way to heal, then I could heal, you could tank, and Peter could be DPS." Then he dashed off again, trusting Xander understood him.
Meanwhile, on Alec's team, Sloan did absolutely no strategizing, and just tried to shoot and run as best as she could. At the end of the game, when the timer beeped, both of them walked out and hung up the guns, tired but pleased, and excited to see which team had won.