The Eruption armour is so much fun I decided to extend the testing period. Extended to some Arachas, and some wild dogs. Have you ever seen a dog go boom?
I just enchanted a piece of armour with the Eruption Runeword and wanted to test out if it works, so I jumped on Roach and rode up to three undiscovered locations in the hills of northern Novigrad and tested it out.
Runewords and Glyphwords are special protective words that can be enchanted onto weapons/armour – later in the game – and are part of the Hearts of Stone DLC.