In Utter Darkness

In Utter Darkness is a mission in the protoss mini-campaign in StarCraft II: Wings of Liberty. It is a flashback of the Overmind's vision as seen by Zeratul, and watched by Jim Raynor on board Hyperion.

Observing the Future
Zeratul witnessed the protoss gathered for a final stand against the Dark Voice. It was a vision from the Overmind channelled to Zeratul by Tassadar.

The Last Stand
The protoss gathered their remaining strength for a last stand against the Dark Voice's combined hybrid and zerg force. The besieged hoped to survive long enough to complete an archive. The archive was intended to aid those who might arise after and challenge the Dark Voice.

The protoss were finally wiped out. They were followed into extinction by the zerg.

Gameplay
Players control a protoss army, including a number of heroes, besieged by hybrids and zerg on three sides. The only objective is to kill 2000 enemy units. After that, the mission continues until the protoss are wiped out.