Original Available here
I haven't published this on the KDE store (yet). For now, you can manually install using the following commands at your own risk ;)
git clone https://github.com/sharunkumar/watch_dogs-kde-splash-arch.git
cd watch_dogs-kde-splash-arch
mkdir -pv ~/.local/share/plasma/look-and-feel/com.sharunkumar.watchdogsxarchlinux
cp -r . ~/.local/share/plasma/look-and-feel/com.sharunkumar.watchdogsxarchlinux
After this, Watch_Dogs x Arch Linux
splash creen will be availabe in settings.