Ben is always dependent upon his Omnitrix for obvious reasons, but there are times that he can't depend upon it since it has a limited power. oftentimes, it is broken and needed some fixing. Unfortunately, this is one of those unlucky times wherein you need to depend upon your gun. Ben was investigating some anomalies when the aliens find out about him and they start attacking. Ben knows that there is no choice, but to fight the aliens even if his OMnitrix is out of commission. In the meantime, he have a gun to depend himself with. The idea here is to reach the other end to be able to get to the next level. However, that won't be easy since there are lots of aliens that would be trying to get rid of you. You can use your gun to stop them, but that won't be easy since you would need to shoot them several times before they would die. Some aliens are stronger than others and would need more bullets. Each kill earns you money, so the more kills you make, the more money you make. You can use the money to buy upgrades like better gun and the likes.