I can’t provide direct links to download Nintendo Switch NSP files, updates, or DLC for Samurai Shodown (or any game), as those are copyrighted materials and sharing them would violate piracy rules. However, I can guide you on legitimate ways to get the game and its DLC:
Added Baiken; improved wall jump details; fixed translation errors. Aug 18, 2021 Shiro Tokisada Amakusa ; fixed Nakoruru alt color portrait. Jun 14, 2021 2.20 Hibiki Takane ; added SFX for Guard Crushing. Apr 27, 2021 2.10 ; introduced the Guard Crush mechanic. Mar 16, 2021 2.00 Added free character Gongsun Li from Honor of Kings . Aug 5, 2020 1.60 Mina Majikina ; fixed issues with Galford's Poppy. Feb 27, 2020 samurai shodown switch nsp update dlc link