Hidden Achievements in Legion

There are 3 Hidden Achievements in Legion:

Each achievement rewards 10 achievement points, and once you complete them they will show up in Quests - Legion.

Drum Circle

In order to get this achievement you will have to jump on the floor with the huge drum in the Hall of Chieftains (Thunder Totem, Highmountain). You can do it solo or in a group, and you will have to jump for a period of time before the achievement triggers.

Please note that if you're doing it solo then it may take 1 or 2 minutes to get the achievement, so don't worry if you don't get it immediately.

Zoom!

In order to obtain this achievement, you will have to help Zoom win the snail race. You have to walk in front of the other snails to slow them down so that Zoom can win the race, and this can prove to be difficult. Therefore, the best tactic is to use a https://www.wowhead.com/item=122109/fragment-of-desire and get it to confuse the other snails.

After Zoom wins the snail race, you will be rewarded with the companion/pet version of Zoom.

They See Me Rolling

You can attempt this achievement only when the https://www.wowhead.com/quest=46175 World Quest is up in the Broken Shore.

You will have to reach the end without the barrel taking any damage, which can easily be accomplished within a few attempts by sticking to the left side of the road, only moving to dodge a mob if it’s going up the very edge of the road.

If you fail, you can exit the vehicle (the barrel) and try again.