Sacred Icon is a Halo 2 campaign level. As Thel 'Vadamee, you make your way through a wall filled with Sentinels and the Flood, ending in an open-air Elite encampment. You must defend it successfully from the Flood onslaught before the next level Quarantine Zone starts. This is the first and only level where Jackals will be your allies. This is also the first of three levels with Human enemies ever in the whole series.