This is the final stretch of the game and it's time to let out all the stops. You'll have both Rico and Narville by your side for this chapter, but that doesn't mean it's an easy ride. Mainly it will seem that you'll need to play baby sitter while reviving your fallen comrades.
Start by holding back and destroying the Helghast bug robots that crawl your way. It takes only a single clean shot to detonate these critters. Next up Helghast guards will appear. Let Rico and Narville lay down suppressant fire while you take the high ground and eliminate the troops.
You'll next come to a curved hall that lacks decent cover. Let Rico or Narville take the helm and act as bait. As enemies come forward to slaughter your allies, snipe each of the baddies from a distance. One or both your allies might collapse when this happens, so wait on reviving them until the coast is clear.
At the next weapon station switch out for a rapid burst weapon and clean up the next wave of Helghast. You'll soon come to an area where the gravity has been turned off. In this environment jumping will be hazardous for both you and the enemy. Enemy drones will also appear from afar. Be careful when destroying these enemy's, as the gravity can still cause their destroyed wreckage to explode in your face.
When the Helghast are dead, turn the gravity back on and arm yourself with some new weapons. You'll come to a set of elevators that will first deploy normal troops, followed by drones and finally a gatling gun boss. As with the previous gatling gunners, fire at their heads until they hunch over; when the enemy is on their knees, instead focus on the tank on his rear.
you'll face off with more robot bugs, so be quick about shooting them before they can come in close and ruin your day. Additional Helghast troops will also appear from the right passage, but can be quickly executed with a little help from Rico and Narville.
After another brief scene you'll arrive at a wrecked section of the space elevator. The enemies are up top but both of your allies will dash to the lower level. Provide them with cover fire before moving down to the bottom yourself. One or both of your allies will most likely be wounded in the crossfire, so be quick on reviving them.
In the next corridor both Rico and Narville will go for the limited cover on the left. This will put you at a disadvantage as any other cover is too far back to get a clean shot. Instead, let your allies provide the cover fire and charge right at the Helghast. If you curve to the right you'll find a weapon cache with a powerful Arc Cannon. Use this beast of a weapon to clear out any remaining enemies and make your way to the docks.
you'll take the gunner's set as Rico pilots a high-jacked Helghast fighter. Target the enemy fighters in your sights with missiles and laser fire. Jammer can take care of herself, but the rest of the Raiders will likely not survive the battle. Worry about your own life and concentrate fire on the fighters in Rico's way. If they attempt to fire missiles, quickly switch focus on these projectiles.
you'll now be up against Stahl's main cruiser. Quickly destroy the two Helghast fighters that bolt towards you. Remember to fully destroy them, as the partially wreckage can still collide into your own ship. Let Rico pass under the cruiser's docking clamps and quickly destroy the docked fighters. As Rico swoops back up, concentrate on the cruiser's cannons and any rogue fighters. Next you'll arrive at the power core. Target each of the generators one at a time to take the cruiser down to half power. Rico will come around for a second pass and a loop for the same rotation: cruiser defenses, Helghast fighters, and finally a gun down of the second power core.
After a brief scene it's the final showdown with Stahl's cruiser. You'll want to ignore the ship itself and instead attack the missiles it launches. While Your own missiles are powerful enough to take out the cruiser's attacks with one shot, it is far too slow to take care of the whole barrage. Instead switch it up with laser cannons while your missile pods recharge. This will give you enough speed to take down every missile that slams into your ship. After Rico has gotten close enough to the ship, quickly press the on screen commands to conclude Killzone 3.