This is so painful..
I am trying to %100 ff6 and I just finished a second run and realized I missed one monster and one treasure. The monster was the Destroyer enemy from the magitek facility which can only be visited once. And I'm pretty sure the treasure I missed was in the Dreamscape, which also can't be revisited. So I have to play through the whole game again just for one monster and one treasure. And I still have to get Joker's death which is probably gonna really suck.