Special thanks to Yaen for providing information and video material.
He steps back. That’s it.
He will turn toward a player with aggro. Then he will do a roar, jumps up and land on someone’s location.
You will get stunned if you stand near the location.
He will turn toward a player with aggro and stomps his two feet. He will then do 3 consecutive jumps on the player he turns towards.
Just keep running in a straight line, do not move backwards.
He does a wind up animation before running forward. He paws the ground with his left foot.
Below a certain health, he starts being able to charge 3 times in a row.
He does a 90 degree right turn while doing the swipe.
He does two swipes in front of him.
He does two double swipes.
He does a 360 while backstepping and then does a long range breath attack. Dodge ASAP after he backsteps.
Sometimes he does a shout before doing it, but not all the time.
If you knock/break the boss, he will do an explosion AoE around himself after getting back up.
Make sure to run away before it recovers.
The boss can also do its explosion without the knockdown prerequisite.
It always arches his head up, shouts and turns 180 before doing his move. That does not mean, that every time the boss does this combination, he will do the explosion.