This young indie band sounds lovely, I am sure they will go far!
All joke aside, it's pretty good though I would say that it sounds like standard Maiden. Not that that in itself is bad, AC/DC have been sounding the same for decades and the quality is still up there but it just my feeling after a first listen.
Though I will note that the production... damn they really kept it old school because that is pure recording with, i believe, almost if no computer enhancing in there. It's all clearly a vibe recording as they aren't always tight but again, that's not a bad thing at all. It gives a very unique vibe that really serves Maiden well!
Up the irons!