"The Dark Elves are invading London, with portals opening throughout the city. Without the Bifrost, options are limited, but unless we can find a way to take the fight to Svartalfheim, we will fall. In our darkest hour, we turn to Thor." — Введение в Главу
15 Star Mastery of the Special Operation will NOT unlock Heimdall.
One of the Tasks requires the defeat of an Epic Boss. This can be done by having the requirements needed to unlock the Epic Boss or by skipping the task by paying 25 Gold.
"Cut off from Asgard, we must stop the invading Dark Elves before London is overrun. All efforts should be focused on sealing their attack portals." — Mission Preview
"With our backs against the wall, a dangerous alliance is made. This could be the edge we need to emerge victorious... or it could simply hasten our demise." — Mission Preview