Sephiroth
enduring through the worst-He found out he was artificaily made i'd rate that bad.
and releasing the pent up fury-Set fire to Nibleheim
coupled with the destruction of hundreds,-He killed too many people just too many.
and exploration, from sea to show,-The Jenova battle on the ship and the battles at other locations?
discovering the lost, perhaps hidden memories-Remembering his past sort of learning what happened.
to unleash the true potential- to find the promised land