Well yeah, I know it can be done a lot easier now. My point is just the existence of it in the first place.
There is a comprehensive guide but it relates to the steam release, outside of there being less achievements in the PS4 version most of whats in the guide applies
http://steamcommunity.com/sharedfiles/filedetails/?id=665159772
There is also a less image heavy 100% guide here
http://steamcommunity.com/sharedfiles/filedetails/?id=680623233
I used a combination of both to get everything on PC, the hardest part will indeed be jump rope. The nero brothers you can get through by recording them with your phone and playing it back, it's tedious, but it works.
Excalibur 2 is utterly inconsequential if you do it on a 2nd play through (you know what the critical path will be) with the speed boost
I would say the 2nd most missable is easily the ATE one, I finished with an infuriating 78/79 on my first play through, no idea what I missed. I would keep a separate checklist for these alone. Some people are convinced that Tetra Master (win 100 INDIVIDUAL MATCHES e.g. you cant play the same person 100 times) is missible but its not, I did it before the point of no return where I had conceivably missed a lot of chances, and there were still enough NPCs left to get it.
Also, leave jump rope till last (you can make a seperate save towards the end of disk 3) knowing it's your last thing to do gave me a lot of drive to power through it. The whole thing is luck, muscle memory and patience and about 5 hours
The whole thing took me a whopping 120 hours to get 100% on PC (discounting a separate 25 hour run to get all the damn ATE's) but I enjoyed every minute of it, it's a gargantuan JRPG back from when the bred them thick lol, they literally dont make them like FF9 anymore.