Attack on Sanctum

Attack on Sanctum is a Halo 5: Guardians multiplayer level exclusively for the Warzone gametype. The map was released as part of the Warzone Firefight update on June 29, 2016. This is the only Warzone map to include Jul 'Mdama as a boss.

Universe and lore
The area Attack on Sanctum sits, was once a lush garden and the site of towers of glass and steel in an age now forgotten. These towers once helped launch the Sangheili's first interplanetary probes. The towers were abandoned as the area's climate shifted, antigravity was discovered, and Sangheili colonization took place. They eventually eroded away and following the War of Beginnings, new ascetic temples were built in the area in what was then desert. As of 2558 or so, these temples lie in ruins and the climate is shifting once again back to its garden state.