You begin this level on top of a cliff with a 46 ammo sniper rifle, 96 ammo magnum, and sprint. After walking along the edge of a cliff, you will turn to the left and come to the first set of enemies; two sleeping Grunts and an Elite minor with his back towards you. Jun warns you of them just before you turn the corner. This Elite has been programmed to be very unobservant, and will not see or hear you as long as you stay behind him. Walk up directly behind him and press the left bumper to assassinate him, then kill the sleeping Grunts with headshots or melee attacks. Where the Grunts slept, the path splits into an upward and downward route. You should take the top path because it will allow you to temporarily avoid and ultimately flank the enemies on the lower path.
The upper route will lead you to a strategic sniping point over the enemy settlement below. There is a health kit, assault rifle, and hologram armor ability here. Get behind the large rock to the right for cover and survey the area ahead of you. The targets that you should be looking 7.62×39 ammo for are four Elite rangers and an Elite spec ops, all equipped with either needle rifles or focus rifles. These are the only Elites in the settlement that you can kill with a single sniper rifle headshot due to their low shield capacities. They will always stay on top of roofs, though the Elite rangers will often jetpack between roofs. Kill all of these Elites with sniper rifle headshots, using the rock as cover if they return fire.
For beginning snipers: When sniping these Elites, follow them with your reticule when zoomed in 5x. When they stop moving, zoom into 10x and move the reticule onto their heads. When a dot appears inside your reticule, fire once to kill them. This will usually cause the other Elite rangers and Elite spec ops to return fire. They are armed with accurate weapons, so pose a threat even at this distance. Once they begin firing upon you, return to the safety of the rock for cover. When they temporarily stop shooting, move a small amount out of cover, just enough that you can shoot them without exposing your entire body. Repeat these steps until you have eliminated all of the enemies. If it is too hard for you to achieve sniper rifle headshots, two body shots will kill these Elites as well.
Now it is time for you to eliminate the enemies that you skipped over before. This is not entirely necessary because they will very rarely attack you from behind, but I personal prefer killing all of the enemies in a level instead of skipping them. Move down to the lower path back you the way you came from until you reach a short, wide, and flat-topped rock. Ahead of you, there are three Grunts, one Jackal, and an Elite ultra. Use the rock as cover to kill the Grunts and Jackal when they come in range. Once the Elite remains only, sprint past the rock and swap your sniper rifle for the closest plasma pistol. Using any of the available rocks as cover, stun and kill the Elite with your plasma pistol and magnum.
At around this time, a phantom will drop more enemies into the settlement ahead. Jun will warn you by saying “incoming, looks like we’ve really pissed them off.” Including these reinforcements, there are now fourteen Grunts, four Jackals, two Elite majors, and an Elite general with a concussion rifle in the settlement you surveyed before. Unfortunately, it takes three or more headshots to kill the remaining Elites, so you will have to use the overcharged plasma pistol and magnum headshot strategy to kill them. Retreat up the hill, following the upper path that you initially came from. Stop when you come to a large tree next to a rock. The combination of this rock and your elevation will provide you good cover, and there is only one path leading to you. Once the covenant from the settlement move up to you, pick off the Grunts from far away, keeping in mind that they will be coming from both your left and right. Once the Jackals get closer, kill them by shooting them in the hand, then the head, with your magnum. Only kill the Elites once they come with in plasma pistol range; do not exit your position to kill them. With patience, this strategy will allow you to kill all of the enemies while staying relatively safe.
After enemies stop advancing to your position, move down the hill and enter the settlement. Move slowly and always stay near cover because there are usually some enemies remaining. As soon as you see them, try to kill with a quick headshot before they have chance to shoot you. Move to the nearest cover if your shields fall low. The Elite general with the concussion rifle will always stay in the settlement, so be prepared to kill him. Come as close as you can to him by moving between pieces of cover. Once you are in plasma pistol range, stay in cover to overcharge a shot, then quickly move out of cover, stun him, and kill him before he can fire his concussion rifle at you. After you have cleared the entire settlement, swap for a fresh plasma pistol and restock health from either of the health kits located in the two forward buildings.
At the back right of the settlement, you can find the entrance to the next section through a door into a cement room. In front of this room, there stands a water tower with a two story house behind it. There is an Elite major permanently located on scaffolding of the water tower and a Grunt operated plasma turret on the second floor of the house. There are also five Grunt majors, an Elite ultra, and an Elite minor who spawn next to the house. Unlike the Elite on the water tower and the plasma turret Grunt, these enemies will move around and often exit the house after they spawn.
Inside of the cement room, take the stairs to your right up to the second story. Immediately take cover behind either of the two cement blocks forward and to your right. Begin by killing the Elite major on the water tower in front of you with an overcharged plasma pistol and magnum headshot. Next, stand against the pile of wood planks and use the curvature of the cement strip to your left as cover. Hugging this cement strip, slowly move around the curved shape, killing any enemies in the house as soon as you can see them. To take cover, back up along the strip and the curvature of the form will protect you. At the end of the cement strip, you will have a clear shot at the Grunt operating the plasma turret, so kill the Grunt with a magnum headshot when it is facing perpendicular to you. Finally, sprint to the cover of the house and take out any remaining enemies from the cover of either doorways.
If you need to restock on ammo or health, there is a health kit and three shotguns in and around the initial building and another health kit in the far building. In the next section, you will encounter two guetas, a gorilla-like creature native to Reach. They will only attack you if you attack them, so I suggest leaving them to peace. However, if you choose to kill them, detach the plasma turret from the second story of the building and take it with you.
After you have cleared all of the enemies in this section, move on down the path to the left of the far building. Here you will encounter a Grunt and a Jackal. You will need to kill them quickly with magnum headshots before they can damage you because there is no good cover nearby. Continue to follow this path a little farther, and you will reach the second rally point.
Part 2: Let sleeping dogs lie
After following the path, you will enter a large open area with two guetas fighting a handful of Grunts. Because guetas are wildlife and not covenant, they will only attack something if they feel threatened. For this reason, if you do not shoot or approach them, they will not harm you, which allows you to sprint by into the next area. However, if you do want to kill them, use the plasma turret from the last section. They have large amounts of health, but the firepower and high damage of the plasma turret will easily kill them.
After you exit the clearing with the guetas, follow the path until you can see the pumping station ahead where four civilians are attempting to protect their homes. This area is used in the firefight map “Waterfront”. On the top of the hill to your left, there is a magnum and a sniper rifle. Restock on magnum ammo but leave the sniper rifle. Move forward while hugging the left wall until you come to the bridge blocking your path. Sprint at the corner between the rock wall and bridge wall and jump, bringing you on top of the bridge. Use the cement cube with the lamp on top as crouching cover, providing you a good flanking position on the enemy. In the settlement ahead of you, there are three Grunt minors, two Jackals, and two Elite majors. A phantom will also deploy three Grunt majors, three Skirmisher majors, and an Elite major soon after you reach the top of the bridge. From your cover, kill all of the light infantry directly in front of you with your magnum. Once the coast is clear, sprint forward and grab the 44 ammo DMR halfway across the bridge, then return to your cover.