Okay, so if you are anything like me, you were no where near getting this trophy. Heck, you probably didn't even touch Jude's link skill at all because a) you played as Jude or b) you linked mainly with every other character /but/ him. So now you're at the end of the game and stuck or on NG+ and having a hard time getting this trophy.
Well, I found this lovely video by Kuway
that will indeed solve /all/ of your problems!
Kuway basically addresses how to get the trophy at the 70+ level range. (He had lvl 99 characters, but I did with lvl 70 characters so you might be able to do it with lvl 65+ characters; but don't quote me on that.) Basically he says to go to the Tatalian Abyss
and look for the Blade Beak
. And while that's all and good, you can do the same thing with the Lizardman
I suggest doing it with the Lizardman instead because the Lizardman knocks you down significantly more thank Blade Beak does. (I tested.) But there are some things to watch out for it you do decide to use the Lizardman instead of the Blade Beak. Lizardman can do one hit kills. So be prepared with as many Life Bottles as you can hold or always make sure Elize is able to heal.
Another thing I did to speed things up was run towards the enemies. It's a bit hard to explain, but when enemies would attack me, I just kept running into them. You know, like how sometimes you mess up and end up walking into walls if you don't play attention while playing. So I basically bum rushed them and I guess since I wasn't able to guard, it was much easier to the Lizardman to make me fall. Because if you do just stand there, you will guard against attacks whether you intend to you not (especially if you have a high defense stat).
So good luck to all of you who use this guide. Hope this helped.