Xbox roguelike shooter Anvil: Vault Breaker to lose multiplayer and be delisted from store next month due to publishing rights issues

Action Square announcing server closure for Xbox Game Pass roguelike shooter Anvil Vault Breaker next month and delisting it from the Xbox store
Follows recent server shutdown announcements for other Xbox titles like Warface Breakout and Second Extinction
Anvil servers will close on Dec 31, rendering the game unplayable; it will be delisted from the Xbox store on Nov 30
Reason appears to be publishing rights issues; current Xbox version published by another company
All Anvil achievements will be discontinued when servers go offline at the end of December
Completing all achievements takes 120-150 hours; additional DLC achievements take another 30-40 hours