Update:
Might as well post this again. I edited the original but it's 2 months old so I figured this is a way to be sure you see it
I think I got all the cards. I say think, because the 68 prey cards are missing Light Side and Dark Side (Luna's cards) and there's a mystery card that I am still missing, but I don't think I'm actually missing anything. So, technically, I'm at 69/68 unlocked cards? Somehow?
Edit: Light Side and Dark Side are still missing in the list, but while playing for fun I noticed Luna played a card I'd never seen before: Jab (well, Advanced Jab). I got it after digesting her. So, now I'm at 68/68 cards! Or... 70/68?
Edit 2: Found another Prey card that is missing in the list at the start of an Endless: Antivo Training (which is also pretty good). Did you add those later but forgot to add them to the starting list as well?
No issues with the 69 Pred cards though. All cards are accounted for. Unless there's one i've never seen either...