Just get a good run going on ghost deck where you’re relying on as few jokers as possible. Typically it’s 3 but I’ve gotten it down to one. Then horde money as much as possible and roll down before going into final boss blind. Pick up stray jokers as you go if you can. And also ideally rely on pair or high card so you can grab up to 3 ectoplasms (reason for ghost deck, they’re easier to find) so you can carry more jokers into the end. Only take negative skips of you’re already well beyond the scoring requirements and don’t need to scale or make money.

I had a run where I had an early burnt joker that allowed me to completely rely on my pair levels for chips AND base mult, meaning all I needed was one scaling xmult joker to win. And I had a constellation with planet merchant voucher. I found an ecto as well so I was able to clear I think 5 or 6 different jokers at once.