Join a match in 'Critical Strike Global Ops' by picking a room. Walk your soldier using the virtual control pad. Aim at opponents by swiping the targeting icon on the screen. Shoot by tapping the fire button. Swap firearms using the weapon selector to respond to different combat situations. Deploy shields and terrain to dodge enemy shots. Battle in team or solo modes to complete objectives and overcome the enemy squad. Earn points for defeats and helping teammates to climb the score table.