L2Anu Client

If you don't have the client already, download and install the client:
Client (GOOGLE)
Client (MEGA)

Patch

Download the archive with the System and extract all the files to client directory:
Patch (GOOGLE)
Patch (MEGA)

Updater

Download the archive with the Updater and extract to client directory:
Updater (GOOGLE)
Updater (MEGA)
Don't forget to register account