While rare for end users, downloading copyrighted Nintendo content is illegal under the DMCA and similar laws worldwide. ISPs can issue warnings, and in some countries, fines apply.
The internet is filled with websites promising free downloads for Nintendo Switch Submission Packages (NSP) and Horizon Content Meta (XCI) files. However, accessing Sniper Elite 4 updates and downloadable content (DLC) through these unofficial channels introduces significant complications: sniper elite 4 switch nsp update dlc free
If you are looking for more than the basic free maps, here are the official ways to acquire the full experience: Sniper Elite 4 - Season Pass While rare for end users, downloading copyrighted Nintendo
: A standalone assassination mission with multiple ways to eliminate the target. While rare for end users
Enhanced comfort for long gameplay sessions. Game File Formats: XCI vs. NSP