This work is an FPS that loops in time every time it dies and cannot escape from the island until the target is defeated. Since the player himself is also targeted by the target, he cannot spend his time leisurely. If you die, you will have to start over from the beginning, but since you can grasp the behavior of the target every time you loop in time, you can check the flow of planning the strategy aiming for mission completion and the gameplay at the beginning. You can also check various special abilities other than the time loop, such as the ability to rewind up to 2 times even if you die and the ability to attract enemies. In order to make use of the time loop setting, it is also introduced that the weapon is saved even if it loops in the place where it died and it will be used next time.