After discovering Truth’s plan to activate the Halos, you must breach the barrier he has activated and stop him. As you make your way to the first tower, you encounter heavy defenses that you can take out with your Spartan Laser. Make your way up to the first tower and deactivate the tower. Meanwhile, the elites take out the second tower, and Johnson is pinned down trying to get the third. You must head back to the beach and grab a Hornet and fight your way through the arial defenses to the third tower. After deactivating the third tower, flood-infested High Charity comes through the portal and starts to rain down on the Ark. You must fight your way back down through the flood and meet up with marines ready to breach the barrier. After taking out the two Scarabs, you are joined by the flood to stop Truth from activating the Ark. After doing so, the flood turn against you and you must make it out alive. After escaping the flood, Guilty Spark reveals the replacement Halo for the one destroyed in Halo 1. There are three terminals on this map: one in each tower, and don’t forget the Thunderstorm Skull. (IWHBYD too)