First, identify opponent's perks at the beginning of the game. If you spot perks like Unstoppable or Truculence, pay special attention. Check whether it's a gold, blue, or elite perk, and choose a build that can counter it. Against elite Unstoppable don’t try to hit them unless you have elite Truculence. The best counter, however, is a hip check, which you can boost with the Hipster perk. So adjust your strategy, be patient, try to remember which player has that perk and in case of physical contact always prefer hip check. In my opinion, X-Factors like Unstoppable, Truculence, Hipster or Warrior should be completely removed from this game.