I've seen TK get do or die hurry up mode with that single 35,000,000 countdown shot lots of times. It's very simple if you've got good pinball skills and have the game setup decent so it's not constantly ripping you off, and also by skipping out on activating Jericho mode by avoiding the collection of shields.
When he was done with the game, I had it for 5 months and also achieved do or die hurry up on it almost every time I played.
I think there was some confusion about stacking multi balls, so to speak, which rotordave cleared up pretty well on post #25. It feels like you're stacking them, sort of, so I understand how some may interpret it as stacking or running them simultaneously.
And congrats on achieving do or die multi ball as well rotordave! I've achieved that one time, early on in the first month I had the game. It was so awesome it blew me away. I had no idea how I got the multi ball versus the hurry up, so I got on here and read in another thread how to achieve that (hitting super jackpots on each MB and etc.) but wasn't able to replicate it after the first time.
Glad I pulled it off, it was a hell of a rush, but I just couldn't get it a second time and eventually grew bored with trying to make it happen one more time. Really wanted to hit the 300,000,000 mark in scoring but sadly fell just a bit short there.
I may have actually had double scoring when I got the 180,000,000 on do or die multi ball now that I think of it. Because I always went for the iron man targets early on that way when I got to the do or die countdown, and Jericho mode, the score would be doubled and more worthwhile to achieve.