[Drako]

How did you install mullvad?

By cloning it from github, building and compiling it, then doing an NPM install.

For future reference, you shouldn’t clone from GitHub unless you have to. It makes package management hell, and there’s a reason package managers exist in the Linux userspace.

That aside though, install openvpn as well. This can also be found in the mullvad github, but a better practice would be to use your package manager to install openvpn. Once openvpn is installed, configure it for mullvad, then enable the service unit, and you’ll be good.

Blackarch doesn't have a package available for Mullvad, so it is totally necessary for the OP to use a git clone here.

It's very possible that there is a daemon for mullvad, but it's either only available to the Debian/Fedora installation, or you'll need to jump through some hoops to get a daemon working in the git clone install. It would also help to know what version you installed. Was it the WireGuard or OpenVPN version?