You can unlock all costumes from the start (without completing the story) by entering this code on the main menu: Left, Left, Down, Down, Left, Left, Right, Up, Up, Down . Installation Guide for NSP/Updates If you are managing your software manually:
, which faced significant technical hurdles on the platform, Arkham City
If you own the digital version, the latest eShop update typically brings the game to the most stable version automatically. How to Update Batman Arkham City via eShop batman arkham city switch nsp update eshop
To ensure the best gaming experience, you must install the latest update NSP or download the official update directly from the eShop. How to Install the Latest Update
However, the term "NSP" is commonly associated with . It involves illegally downloaded copies of games that are installed onto hacked consoles. There is a very strong warning regarding this: Nintendo has strict anti-piracy measures in place for its digital distribution systems. Nintendo states that "the use of an unauthorized device or software that enables technical modification of the Nintendo console or software may render this game unplayable". Furthermore, playing a modded Switch with an illegal NSP file online will almost certainly result in a permanent ban from Nintendo's online services, including access to the eShop, cloud saves, and online play. You can unlock all costumes from the start
Connect to Wi-Fi, highlight the game on your Switch Home Menu, press + , and select “Software Update” → “Via the Internet”.
Released in late 2025, this update primarily targets stability and performance. It has been noted to significantly improve the experience on "Switch 2" via backward compatibility, including a handheld resolution bump from 540p to approximately 720p. How to Install the Latest Update However, the
The launch of Arkham City on Switch was overshadowed by significant performance complaints, primarily concerning its successor, Arkham Knight . However, Arkham City also suffered from its own set of issues. Digital Foundry called the Switch port of the trilogy a "disastrously poor release".