Hero must survive

Hero must survive is a mission objective typically found in Starcraft missions.

As hero units play an important role in the storyline, they cannot be allowed to die. Death of a hero unit results in defeat for the player.

This gives a player an extra activity to do; they must keep the hero out of danger. In some cases, this may render the hero unit "too awesome to use", so often the best missions involving this objective are extremely difficult without using the hero but possible with the hero's assistance.