The aliens will be a tough matchup as they have a technological advantage over us humans, they must have that advantage as they were able to travel the galaxy to reach Earth and they will be more advanced mentally, and physically and just have better equipment, coaching, and advanced athletes, the only advantage we would have in a hockey game would be that they have never played hockey maybe as its a unique sport but they should be able to learn it fast as I am guessing they are more advanced that us so we would need to try and get ahead of them in the game early and try to keep it simple and just play a good hockey game. I think that we should be able to beat them at the end of the day and will hopefully this is just a dream or something because it would be weird to play hockey against aliens.