For that, Chief trying to find a way out of the planet. However, in the middle of his journey, accidentally unexpectedly Chief has released Didact, an ancient Forerunner soldier from his prison. Didact soon took over Prometheans and Covenant, and immediately attacked them. Considering Chief could not possibly be able to face them all, he immediately contacted the UNSC Infinity ship to help him overcome the attack being launched by Didact. Soon the aid arrived, Chief and Cortana asked the infinity crew to attack Didact. Then, as they lack strength, captain Infinity Del Rio, ordered them to destroy gravity in order for their ship to escape. After the gravity well was destroyed, the captain Del Rio ordered to retreat and return to Earth.
However, the Master Chief did not obey the order to retreat and still wanted to fight Didact. For that, Infinity chief executive commander Lasky, gave him an armed transport vehicle in the hope that he was lucky. Then, Chief and Cortana tried to sabotage the Didact ship before they left. But unfortunately, their plan did not succes. While on the other hand, the composer has been moved from the ring to the Ivanoff Research Station, but unconsciously the Covenant attacked them. Chief defended Ivanoff, but Didact instead took the Composer and used it at the station, to change the fighter under his command, into a Promethean Knights that would be immune to infection.
One thing you should notice is that the Prometheans will emerge as a new race to disrupt your journey. Because, this creature is much different from the Covenant that only rely on shieldnya to survive. Prometheans are smarter than Covenant and have more unique capabilities as well. Then, here in addition to the shield, Knights also rely on his ability to teleport when in a threatened and critical position. And the best way to defeat him is to do a reload of your weapon first, then make sure if your magazine is full, if both of you have done, then immediately vomit all the bullets that are towards him and make sure he is destroyed before successfully doing it. Because Knights do provide the greatest threat among all the existing Prometheans.
In addition, Knight also not only has the ability teleportation, but he also has some other equipment on his body, either to attack you or to protect him. Knight has a sentry that he can form to shoot you automatically by launching a laser. Then, he can also launch a small plane, which can act as a shield when needed. The aircraft is also able to revive Knight, even if it is already falling apart. Therefore, this will be a mandatory thing that requires you, to first destroy it, before you try to hunt other types of Prometheans. With the presence of new variants and species on the enemy side, it means there will be more new weapons you can use. Almost similar to the Covenant's weapons, the weapons carried by Prometheans are also divided into several classes, which distinguishes only the way in which the bullets slide and how to reloading it.
If the Convenant weapon requires you to throw it away, while Promotheans is not much different from UNSC weapons you can use repeatedly. And not only that, some new strengths can also be used for Chief that you can get along the battle. Because, a battle with a new enemy like Prometheans, it will surely demand that Chief apply a much more practical technology. You can also build an auto-centry like Knights you meet, or use Jetpack to reach high places instantly. Finally, any new threat coming from the Prometheans will force you to strengthen your defense. For that, in this series of games, the same as the previous series, where you can still use some war vehicles such as Warthog, Scorpion Tank, Pelican, Ghost, and Banshee, to destroy the aliens. And not only that, you will also find a new super massive vehicle that is Mammoth. Even if you can not use it directly, at least in the presence of Mammoth, makes the sensation of war very tense.
