I linked the instrunction of the node because the wallet is just a Java GUI and doesn't work without a node,
From the README.md:
Windows
Download Windows release binary
hereDownload parameter file
here and uncompress the content inside the folder "C:\Users\%username%\AppData\Roaming\LitecoinZParams"
Manually edit the litecoinz.conf file inside the folder "C:\Users\%username%\AppData\Roaming\LitecoinZ"
Run litecoinzd.exe
Do you need a Wallet GUI?
A Java Wallet GUI is available here.I know it could be written better and I will create a new one detailed only for windows. but at least Newbies should give him a reading

Can you make your coin compatible with coinomi wallet? All these wallets for Windows Mac and such are so unsecure.