This guide will let you know how to complete the Plasma Blast trial in Horizon Forbidden West.
You will need a plasma blast weapon to start this mission and then target Armadillo, the roller-back guy. So you have to jump down from the mountain and target him with the plasma weapon.
You have to build the ring around it to full white, and you will find the bar next to it is building up with more damage. Just fill it up to full and then keep doing damage with the plasma weapon until that bar is full. After that, the bar will expire, and it will explode. You have to do it twice; if you do too much damage, you’ll die after the first explosion. It’s the same as the second. When it explodes, your mission will be complete.
