


LASO/Mythic (Legendary All Skulls On) is back! Well kind of. "Complete all main missions on Legendary with all Skulls active." "Complete all main campaign missions on Legendary difficulty."īeat the main campaign on Legendary difficulty (the hardest default difficulty setting). "Complete all main campaign missions on Heroic difficulty."īeat the main campaign on Heroic difficulty. "Complete the main campaign on Normal difficulty."īeat the main campaign on Normal difficulty. Unlocked for finishing the main campaign on any difficulty. Unlocked for finishing the campaign, after the final cutscene. It's time to face your past and save your future."Īwarded after accessing finishing the Command Spire. "A friend is in danger and time is running out. "Infiltrate the Command Spire and put an end to the Reformation."Īwarded during the quest the Command Spire. "Enter the Nexus and learn the secrets of the Spires. "Reach the Beacons, assemble the Sequence, and gain access to the Command Spire."Īwarded for doing the fourth beacon in the main story. "Take down the Spartan Killers Hyperius and Tovarus."Īwarded at the end of the Pelican Down quest. There is also an achievement for destroying all three guns but you must do them within 20 minutes of your first. "Shut down the first Spire and stop Zeta's Reformation before it's too late."Īwarded after the long cutscene leading to the AA guns.Īwarded for destroying one of the three AA guns. "Defeat the Hunter pair stationed at the base of the Spire."īefore starting the Spire there is a hunter pair that must be killed to progress. "Shut down the Banished mining laser and gain access to the Conservatory."Īwarded for shutting down the mining laser in the main story. "Follow the UNSC signal to a Banished stronghold called the Tower.

"Fight your way through Outpost Tremonius and step out onto the surface of Zeta Halo."Īwarded for stepping foot onto Zeta Halo. "Explore the underbelly of Zeta Halo and retrieve a weapon to turn the tide of this conflict."Īwarded part way through the second level. These are achievement tied to the games narrative and unmissable.
