Your shield's made of rock-hard diamonds. It seems indestructible, but the enemy has damaged it all the same, and you'll have to repair it. Therefore you go in search of diamonds, in order to repair the damage and earn points at the same time. During your fight for diamonds you take up several challenges, that can make you earn extra powerful weapons.
Click to fire.~ Hold the left mouse button to fire automatically. Press the spacebar to use your shield.