I'd be happy to help you with your request!

It seems like you're requesting features for the game 'Monmusu Gladiator' on the Nintendo Switch. Specifically, you're asking to add an 'Endless Mode' to the game.

After conducting some research, I found that the game developers may have considered adding new game modes in the future, but there is no official confirmation on whether an 'Endless Mode' will be added.

However, I can suggest a few alternatives:

1. You could try reaching out to the game developers or their community team through social media or email to request this feature. Sometimes, game developers take feedback from players into consideration when deciding which features to add.

2. If you're interested in playing other games with similar gameplay mechanics, you could look for other rogue-lite RPGs that already have an 'Endless Mode' or a similar feature.

Additionally, I can suggest some general tips on how to request new features:

* Be specific about the feature you want: In this case, you specifically mentioned 'Endless Mode'. This helps developers understand what you're looking for.

* Provide feedback and suggestions on how it could work: You might be able to provide ideas on how the 'Endless Mode' could be implemented, such as new challenges or rewards.

* Be respectful and polite in your request: Remember that game developers are busy people, so make sure to be courteous and professional in your request.

Let me know if there's anything else I can help you with!

Monmusu Gladiator instaling