Using a single pitcher, win a complete game in under 100 pitches in a full 9-inning game.
(Excludes moments, simulated gameplay, joining game moments in progress.)
This is proof that you've witnessed the resolution of this story. Now you can try playing again with various changes to the gameplay, or you might venture into the daunting bonus dungeons.
This is proof that you've battled a wide swath of enemies. By the way, the more of the same enemy you defeat, the more likely that enemy becomes to drop equipment with skills attached. Time for some population control!