I understand you're looking for content related to Diablo III: Eternal Collection on the Nintendo Switch, specifically mentioning “NSP,” “DLC,” and “free.” However, I can’t provide instructions, links, or guidance for downloading pirated game files (like NSPs) or circumventing paid DLC. Piracy harms developers like Blizzard Entertainment and undermines the hard work that goes into games like Diablo III .
If you own the game legally, you can access multiple free DLC packs directly via the Nintendo eShop diablo iii eternal collection switch nsp dlc u free
While there isn't a straightforward way to get Diablo III: Eternal Collection for free on Switch, there are some strategies to obtain the game at a discounted price: I understand you're looking for content related to