You'll eventually unlock the next level of Dead Eye mode during the "You Shall Not Give False Testimony, Except for Profit" mission from Nigel West Dickens. The Level 2 version of Dead Eye will allow you to automatically mark multiple targets so that they all get shot at once. When you enter Dead Eye mode after upgrading to Level 2, you'll be able to automatically mark targets by moving your aiming reticule over them. Enter Dead Eye mode and then move your reticule across multiple targets. You'll see little marks appear on them automatically as you move the reticule. After marking targets with Dead Eye Level 2, press R2 or RT to fire. Marston will shoot all of the marked targets in rapid succession. Marston will automatically fire at all marked targets if the Dead Eye meter runs out. You'll still shoot at someone even if they try to take cover. It's recommended that you mark targets near cover first, so that they have less time to get out of the way before getting shot.

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Write a summary of the previous text in Indonesian:
Tingkatkan Dead Eye ke Level 2 dengan melanjutkan cerita. Gunakan Dead Eye Level 2 untuk menandai target. Tembak target yang ditandai.