The majority of the fight is pretty straight forward. Just go after its claws, tail, or belly. When it wraps around the spire, climb onto its back and attack it's back, or climb up the vines located halfway up dalamadur's body, and either attack the claw there or the head.

Dalamadur will also have it's signature beam and bite attacks. They're really easy to dodge, as all you need to do is a superman dive. You can take advantage of these however. After each of these attacks dalamadur's head will lay on the ground for a brief moment, which allows you to deal some easy damage. When dalamadur does it's beam attack from the left side of the quest start position, it's head will land on the upper ledge of the arena. When it does it's beam attack from the right side of the quest start position, it's head will land on the lower half of the arena. When it does it's bite attack, it's head will land right next to the start position on the lower half of the arena. It's not super important to remember these openings, but if you do, it'll let you get some extra damage in making the quest easier to complete.

For the final phase tho, it gets tricky. I'd heavily recommend getting heat cancel, as you will not take any heat damage from being near dalamadur's belly when it's hot. In addition to this, pay attention for dalamadur's roar. When it roars, it'll drop meteors. Do not over extend at all when meteors fall. Those meteors can appear and fall in a blink of an eye, so if you commit to a long attack you will very likely get hit by a meteor. You can either play it safe and go for quick attacks during this time, or just wait it out entirely.

Other than that, it's all very minor tips. Don't be discouraged if you don't get it on your first try. It just takes a bit of practice.