Click the screen to aim your sniper rifle at the enemies. Swipe your finger to fine-tune the aiming reticle for precise shots. Stop pressing to shoot and eliminate the target. Duck behind objects by tapping the cover button to avoid enemy fire. Watch the timer at the top of the screen to ensure you complete the mission within the 50-second limit. Take out all enemies before time runs out to advance to the next level. Pay attention to enemy movements to prepare for their attacks and avoid return fire. Train your shooting skills to improve your accuracy and speed for higher scores.