Halo 4 Forerunner Walkthrough, How to Complete Mission 3 Alone on Legendary
“Forerunner” is the first mission in Halo 4 where you will encounter Prometheans, a faction of enemy new to the Halo franchise. In addition to new enemies, there are also new Promethean weapons that you will begin encountering in this mission. You will mostly use the light rifle, which is a 3-shot-burst headshot weapon similar to the UNSC battle rifle. You will need to use the light rifle as your headshot weapon throughout this mission. The Prometheans do not use covenant weapons, so you will rarely have access to a plasma pistol when fighting the them. Therefore, when you are fighting Promethean knights (the Promethean equivalent of elites), you will need to use different tactics to remove their shields. For the majority of this mission, you will use the Promethean suppressor, a fast firing assault rifle that deals high damage u .357 Magnum Ammo For Salep close. Use a combination of your auto sentry (an armor ability), grenades, and suppressor fire to kill the Promethean knights. It is vital that you fight them alone, so be sure to kill any crawlers or watchers (the Promethean light infantry) in an area before you engage the knights.
You begin this mission inside of a forerunner teleporter hub with an assault rifle, a magnum, and a hard light shield. The hardlight shield is a practically useless armor ability, so swap it for one of the auto sentries located on the walls to either side of you. The auto sentry armor ability allows you to create a stationary, hovering turret that fires upon the enemies. Enemies will tend to shoot at the auto sentry instead of you, so it provides you with a great distraction. It also deals a fair amount of damage, so it helps you kill knights when fighting them with your suppressor. Once you launch the auto sentry, press the bumper again to recall it.
Walk into the main room of teleporter hub and insert Cortana into the mainframe. She will then create a teleporter to the first relay tower that you will need to disable in order to contact the UNSC Infinity. Jump through the vortex, and you will teleport into a cave a little ways away from the first relay tower. As you follow the path forward, you will see the first Promethean enemies; crawlers. Crawlers are somewhat similar to grunts; they can be killed with a single headshot and they wield the weakest weapons. Notice that the crawlers have much smaller heads than grunts, so you will need to aim carefully. Use your magnum to kill these crawlers with headshots, using the corner of the path as cover. If the crawlers begin to overwhelm you, launch your auto sentry and it will drive them back.
Follow the path until you turn into a large open area. Here, you will find 6 crawlers, a watcher, and a knight. Use the corner you just came around for cover and kill all of the crawlers first with your magnum. As long as you stay back, the knight will not approach you. Now, turn your attention to the watcher. Watchers are support infantry capable of shielding enemies, reviving knights, catching grenades, and spawning crawlers. Watchers do not have heads, so you usually need to kill them with multiple body shots from your headshot weapon. In this case though, your magnum is not strong enough to kill the watcher, so get up close and kill it with your assault rifle instead. If necessary, launch your auto sentry to draw the knight’s fire while you engage the watcher.
Now that only the knight remains, you can focus your attention on him. Knights are similar to the covenant elites, but they have stronger shields and smaller heads. This knight is equipped with a light rifle, which gives him high accuracy but low damage. Therefore, get as close as possible so that he cannot utilize his accuracy advantage. Launch your auto sentry so that it has a clear shot at him, then get up close and use your assault rifle to kill him. After his shields break, continue to shoot him with your assault rifle until he dies. Prometheans have much more shields than health, so once you see their shields break, you know they are almost dead. Swap your magnum for his light rifle, grab his pulse grenades, and swap your assault rifle for one of the crawler’s suppressors. Move into the forerunner room up ahead.