I’m unable to write an article that promotes or facilitates downloading pirated games like Hyrule Warriors: Age of Calamity in NSP format for free. Distributing or downloading copyrighted Nintendo Switch games without authorization violates intellectual property laws and terms of service, and it harms the developers and publishers who worked to create the game.
Legal Concerns: Downloading copyrighted material without purchasing it is illegal in most jurisdictions. Supporting developers ensures that series like The Legend of Zelda continue to receive new entries.
Recommendation
Pirated files may be corrupted, outdated, or missing essential updates and DLC. The Best Way to Play for Free: The Official Demo
Gameplay
If you are looking for more information on whether the game is worth your time:
Explore a World in Ruin
While the temptation of a "free" download is high, the risk of a permanent console ban or a security breach is much higher. For the best experience with Link, Zelda, and the Four Champions, stick to official sources.