In this game, there are a series of levels in which you need to fight courageously. When you are walking in different places, there will be many guards blocking the way. What you need to do is to eliminate them one by one. To successfully eliminate all of the enemies on the way, and be safe, you need to use your guns effectively. Because, at each level, you will have a limited number of bullets to use, and you can unlock new guns only by collecting more points. At this point, you have a counter on the top left of the screen showing you the number of enemies killed. Also, some enemies are stronger than others, and you need to put in different amounts of effort on killing different enemies. Now, get your gun and try to unlock new guns. Shoot your enemies and move on the levels until you complete them all.