So so , one you get to a certain level , you can't buy any more guns , that's the only thing you can buy. Glitches in the game & aiming the rounds get glitchey at times . Same scenarios over and over, rounds do not travel as far as one would think. Seems that the grenades the red guys hold automatically go right to you , no matter how far away you are . After you kill everyone , the game automatically stops you from firing any rounds you have left , even though those shots could save your life