Strategy
Having trouble beating Rufus? Here are some tips.
Rufus's HP:500 MP:0 LV:21
Dark Nation's HP:140 MP:80 LV:18
Your first order of business is going after Dark Nation. Its Bolt attacks are powerful and it casts lots of spells on itself and Rufus, which tends to make the fight tougher than it has to be.
If you equipped Cloud with the "Elemental-Lightening" Materia combination, you won't need to worry about Dark Nation's attacks. Rufus isn't a tough opponant either. Keep your HPs up and use your Limit Breaks when they become available. When Rufus can't take anymore, he grabs his chopper and flies away.