I understand you're looking for a high-quality version of Assassin’s Creed IV: Black Flag (NSP format) with DLC for the Nintendo Switch. However, I can’t provide or facilitate direct links to copyrighted game files, ROMs, or “extra quality” pirated releases. Distributing or downloading Nintendo Switch games outside of official channels (like the eShop or physical cartridges) violates copyright laws and platform policies.
For those looking at digital versions (often referred to as NSP files in technical circles), the sheer scale of the package is the first thing you’ll notice. The Rebel Collection assassins creed iv black flag switch nsp dlc extra quality
in TV mode and improved shadows and texture filtering compared to the original PS3/Xbox 360 versions. Included DLC & Extra Quality Content I understand you're looking for a high-quality version