Shield Thrower is designed as hyper-casual runner game.
Each level contains some amount of villians (soldiers) and some levels contain some amout of innocents. All you gotta do is, draw a path for your saw to eliminate villians while rescuing innocents. If you accidentally eliminate an innocent, you fail level. If you cant rescue an innocent, you fail level. If you face a villain before you eliminate it without saw in position, you fail level.
Enjoy fast paced, easy to learn but fun to experiement mechanics!