deploying tricky exe's

Perhaps this you're overengineering 😉 What you could do is create a folder on your hard-drive c:\install. Copy all the files and directories like in your screenshot in it (Gaomon, GaomonTablet and the install.ps1.) Create another directory in c:\install, Shortcut for example, and copy shortcuts for your application in it that do work (Just create them on a system on which the applications already are installed) Adjust your install.ps1 script like this

#Copy files
New-Item -Path "c:\" -Name "Gaomon" -ItemType "directory" -force
Copy-Item -Path "Gaomon\*" -Destination "C:\Gaomon" -Recurse -force
New-Item -Path "c:\" -Name "GaomonTablet" -ItemType "directory" -force
Copy-Item -Path "GaomonTablet\*" -Destination "C:\GaomonTablet" -Recurse -force

$Copy Shortcuts
[system.string]$Desktop = [Environment]::GetFolderPath("Desktop")
Copy-Item -path "Shortcut\Gaomon.lnk" -Destination "$($Desktop)\Gamon.lnk"
Copy-Item -path "Shortcut\Gaomon.lnk" -Destination $($env:APPDATA)\Microsoft\Windows\Start Menu\Programs"
Copy-Item -path "Shortcut\Gaomon Tablet.lnk" -Destination "$($Desktop)\Gamon.lnk"
Copy-Item -path "Shortcut\Gaomon Tablet.lnk" -Destination $($env:APPDATA)\Microsoft\Windows\Start Menu\Programs"

Uninstall.ps1 would be something like this perhaps:

#Remove files

remove-item c:\Gaomon -recurse -force
remove-item c:\GaomonTablet -recurse -force
[system.string]$Desktop = [Environment]::GetFolderPath("Desktop")
remove-item "$($desktop\gaomon.lnk" -force
remove-item "$($desktop\gaomon tablet. lnk" -force
remove-item "$($env:APPDATA)\Microsoft\Windows\Start Menu\Programs\gamon.lnk" -force
remove-item "$($env:APPDATA)\Microsoft\Windows\Start Menu\Programs\gamon tablet.lnk" -force

Not sure if you need shortcuts for Gaomon and Gaomon on all locations 🙂 Create a .intunewin package from your c:\install location