After entering the scenario, go forward and get the bomb on the left of the walkway, you'll see it on minimap as a cogwheel. 2 trolls attack after you exit from the starting building and the bomb is protected by 4 other trolls. Avoid or kill the huge patrollers on the walkway. Time consuming, but you may get a green if you kill them. After you get the bomb, take it to Velreesa (open the worldmap, you'll see a chatbubble where she is), you blow up the wall and now you have to kill the troll from the cinematic, War God Al'Chukla. Go trough the blown-up wall and head left avoiding or clearing trash until you reach the central walkway, he's up the stairs on the plateau, appears as skull on minimap. He only has 1 special skill, summons a thunderpillar, which draws you slowly towards it and explodes after a few seconds. Run away from the blue thunderpillar and you'll be fine. When he's dead take the portal next to Velreesa back to Jaina.
Side fact: if your character dies at any moment, release spirit and you will be resurrected in 5 seconds in the building you started.
Side fact 2 : after killing the thundertroll, if you walk up to the uppermost gate and you can see Shan Bu's healthbar on the other side with over 4 million hp. Managed to pull him somehow on my hunter character, it's not worth it tho, has no special abilities, just keeps pounding with his mace and drops absolutely nothing.
TheWoWDB
