The release is based on an open-source, native decompiled reimplementation of the game by TwilitRealm with improvements, a port to the Vulkan API for Switch by givethesourceplox ; 
the European PAL GameCube version is included in RVZ Zstandard level 19 with a Block Size of 128 KB, plus a translated ROM from Zelda64rus v2.0 from February 7, 2015. Optionally, 
custom ZTP 4K 3.0c (1080p) HD textures by Henriko Magnifico in ~13,800 files for 2.2 GB are included. 

Settings are adjusted in the in-game Settings menu, called up with the "-" (minus) button; cheats are available in the Cheats menu. 
For improved performance, it is recommended to use maximum console overclocking, then in the in-game Settings > Video menu, 
set the parameters Internal Resolution 540p, Shadow Resolution 1x and Unlock Framerate: Off. This is still the first, early version of homebrew on Switch, so bugs and lag are possible.

How to install:
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Copy the dusk folder to the root of the microSD card.
Install the .NSP file ' Dusk Twilight Princess [01a43f49196b0000] ' in any convenient way (via DBI ).
After launching, in the main menu, select the first item “Select Disk Image” > dusk folder > translated .ISO ROM or original .RVZ file, then the Play button.
Play.
Have Fun

Optional : To install Henriko Magnifico's custom 1080p HD textures, unzip the 'Optional HD Textures ZTP 4K 3.0c (1080p).7z' file to the root of your Switch memory card.