Four Twilight Elements

Objectives
Collect the four Twilight Elements: Air, Earth, Fire, and Water.
 * Twilight Element of Air
 * Twilight Element of Earth
 * Twilight Element of Fire
 * Twilight Element of Water

Description
The Twilight's Hammer have summoned. It's a combination of the four elements infused with the power of their special ore, Elementium.

If you want to save your precious Thousand Needles from total destruction, you're going to have to destroy it. But first, you'll need a few things to get through its protective shielding.

Go east into the Withering and bring back the four Twilight elements.

Rewards
You will receive:

Progress
Do you have all of the elements, ?

Completion


I'll combine them into a suitable form. I'll keep it's use simple.