This is it. You've passed all the tests of the Hyldsmeet... all but one. You've risen among our sisters' best and fiercest.
The final test is at hand. The Drakkensryd - the true test of a Hyldnir's worth and warrior spirit. It'll be you, your riding drake, a chained harpoon and a score of your sisters vying for dominance.
Accepting the quest will put players on a Hyldsmeet Proto-Drake on a flight to the Temple of Storms. The Proto-Drake is a vehicle that only provides a "leave vehicle" button. As most of the flight on the Proto-Drake is exceedingly high in the air, one is advised to have some method of slow-fall available in case you fall off the drake. Climbing on a drake will dismiss your pet, and pets cannot be summoned while on drakes.
Once circling the Temple of Storms, use the harpoon to jump from drake to drake, killing hyldnir along the way. You can either attack hyldnir on other drakes using ranged attacks, which is impossible or impractical most of the time (as they're either too far or not in front of you), or jump to an occupied drake and fight hand-to-hand with its current rider.
It is possible to use bandages while on the mount, however it is impossible to eat or drink.
Around the Temple of Storms, the columns have ornaments on them. Look up and to the left (at the columns), target a column, and use the harpoon to get up on the temple. If you run low on health, you can use the harpoon on an ornament to reach the temple, eat there and then use the harpoon again to get on a drake.
The word "Drakkensryd" seems to have a Germanic etymology (word origin). It is similar to English dragon ride and Dutch drakenrit. That is actually what this quest is about. You ride on a dragon and attack mobs as explained above.