Install and Use
From the disk:
The Xfce desktop can be installed from the installation DVD or NET images.
From the live system:
Alternatively, openSUSE Tumbleweed can be tested and installed with Xfce in live mode. ISO images are available here.
On an existing system:
Besides already installed desktop environments you can install all necessary packages via the pattern xfce. Either via YaST or directly in the terminal:
sudo zypper in -t pattern xfce