The monsters in the Omega Ruins are pretty tough. But seasoned Final Fantasy players know not to go into a place called the "Omega Ruins" without being pretty beefed up to begin with. Mimics are pretty tricky at first because you go in thinking "yeah I gotcha, just use physical attacks on this one right?" NOPE.

Once I cheated at Sphere Break in FFX-2 and the victory cutscene kept replaying. It was all like "I won!" doo doo dooo ♪ "I won!"