Tbh honest i've completed a lot of this stuff anyway (FF) - and i would only ever do it again if it was possible to get trophies offcially.
but the hardest trophy for me would be getting the Excalabur 2 on FF9; which i ended up getting in the end - but turned out to be pointless really because at that point in the game you have access to Ragnarok and being at the very end of the game makes the weapon redundant tbh. just for personally achievement really!
FF7 - getting Don Corneao to choose Cloud, successfully infiltrating the Shinra builiding, Snowboarding, etc, loads.
but i would also consider The Tower of Temptation on Grandia to be an epic trophy - which i wouldnt want to do again tbh.
or even Legend of Dragoon, being Fraust, getting all the stardust. great game for trophies!
i could probabily think of loads for Vagrant Story and FF Tactics - those games were immense and difficult to finish regardless of replay value.
i know the thread says RPGs, but great PS1 games would be MGS 1, completing the game on extreme - which again i probabily wouldnt do again, or beating Mantis without unplugging the controller.
or even Resident Evil 2, (maybe 3) - beating the Hush campagain.
