Jacek is armed with a gun which can be upgraded by collecting special batteries. A special meter on the right-hand side of the screen shows the current firepower of the gun. There is a limited number of shots of each power level available — once these run out, the firepower of the gun falls down by one level. At higher firepower levels the gun's rate of fire drops down, forcing the player to wait for the gun to cool down before firing again; the temperature of the gun is indicated by another meter on the left-hand side. Touching a checkpoint causes the gun's power level to drop down back to zero.
