I haven't technically beaten Final Fantasy 8, and since I discovered that I hate it, I never will.
In FF8, I'm stuck on a boss who uses one of your characters as a shield, and if she dies, you die. I never bothered to learn the complicated junctioning system, so I just used GFs (summons) throughout the whole game, which worked wonders - they deal massive AoE damage that pretty much kills any mob in one hit, and bosses go down easy aswell... but since using GFs in this fight would kill my own and end my game, I had to rely on my attacks and magic, which still did about as much damage as in the beginning of the game. And I'm far too deep in the game to start hoarding spells to junction, so I'm pretty much screwed.