If you’re a little behind, don’t fret!
you might easily increase your Union Level by completing main quests and exploring.
verify your team doesn’t have any Electro characters, asMech Abomination is resistant to Electro damage.

Just see to it to keep dodging its attacks while doing this!
We’ve got guides on beating theImpermanence Heron, theLampylumen Myriad, and theTempest Mephisas well.
