Pinball FX3

To a score a super jackpot, you must first score three regular jackpots in multiball to be allowed the opportunity to shoot for them.

Getting multiball involves locking balls into the casters club, located on the right side of the table. The easiest way to do this is to hit this from the left flipper, and after locking a ball, catch the ball on your left flipper again after plunging and fire it in. 3 locks will start multiball, in which to score a jackpot, you must lock a ball back into the casters club, then shoot another into the spinner on the left side of the table within 15 seconds. Take too long the first ball will be kicked out, requiring you to lock it again. Doing this awards a jackpot and the process starts again. The jackpots are worth 20, 30 and 40 million respectively.

Do this three times and the super jackpot will be lit on the captive ball in the centre of the table. Hitting it once when lit for super jackpot will award you 100 million points and the achievement.

Some side notes:
- You don't have to score all three jackpots in the same multiball to qualify. The game will save your progress after scoring a jackpot, meaning if you've scored the 20 million jackpot and exit multiball, next time you get into multiball, it will start you on the 30 million jackpot.

-If you lock a ball and then lose the other two, you can still score a jackpot as the game will give you a small grace period shortly after releasing your ball, so use it wisely!

-If you get the third jackpot and exit multiball before getting a super, the next time you start multiball, the super will be lit immediately!

-You can also earn multiball by shooting the captive ball in the centre after shooting the long cast (right loop) 5 times. This is not recommended.

-After scoring any jackpot in multiball, relighting the multiball will take one additional shot to the casters club.

-The only useful upgrade to equip is the extended ball save, as this will give you more protection at the start of your multiball.

If there's anything I've missed please let me know, and good luck!

The goal of this achievement is to:
Start multiball, get 2 jackpots, then get the super jackpot.
Each of these steps can be done across multiple multiball sequences and over multiple balls.
I would highly recommend you first do the survival mode and get to at least level 5 so you can get the rewind and this table loves to send the all Straight Down The Middle (SDTM).
I'd also recommend doing the same steps to get this achievement, stated below, because it is very high scoring.

To start the multiball hit the ball into the sinkhole on the top right 3 times. At launch hold the left flipper and the ball will be caught here most of the time.
Once 3 balls are locked, multiball will start. Hit the ball back into the sinkhole on the right again and then hit the ball into the upper left sinkhole. You have about 15 seconds or so to hit this shot.

This will get you your first lure, and your first jackpot. Notice that the first fish on the upper left sinkhole is blinking now.

Do that 2 more times and the so all of them are blinking and the red light will will be blinking in the center of the table. Hit that for the achievement.

2 other things, when you hit the right sinkhole the ball stays there so you have 1 less ball to manage. Second, If you lose all but 1 ball, you still have several seconds either to hit the upper left sinkhole for a lure and and a jackpot or super jackpot. The other ball ejects from the right sinkhole for this.

Here's a video of what to do plus a a good description.
Also, by watching the video you'll notice that the final multiball that was started, he only locked 2 balls and then hit the captive ball in the middle to start that multiball. I believe this only works for the final super jackpot multiball.
For some reason the video won't link to the solution so I put it in the comments.
And instead it put this picture???!!
Weird.

Video of unlocking the last jackpot and then the super jackpot, also demonstrates some of the techniques described in the other guides....