Quoted from neurokinetik:
Also, has anybody figured out anything for haunted multiball? I got it going, but was not clear on what I should be shooting for
I have not taken the glass off to confirm. but I go straight for HMB and have been there dozens of times so I think this is how it works.
collecting haunted mode when all 4 have been collected immediately starts haunted multiball and shoots two additional balls into play. It can be started any time the mode could have been. You also get a SHORT ball save - maybe 3 seconds, much less than ECMB or Rescue MB grants.
The scoring is like a souped up Haunted Bumpers. All bumper hits (I think including slingshots and the outlane bumper) score massive points and add a H-A-U-N-T-E-D letter. Once HAUNTED is completed squeeze a ball into the HAUNTED collect path to score a jackpot equal to the number of points you've collected this way so far (jackpot and H-A-U-N-T-E-D letters then reset).
The amount of points you can get out of this is frankly nuts to the point that I think it'll have to be toned down someday. Even if you're bad like me you can get a million point game just by focusing on and timing out haunted modes, starting haunted multiball close to a ECMB lit and crystal ball MB lit, use those ball saves to get all 5 in play and flail around for the forest area.
You can't do the hold both flippers disable the pops trick in HMB to guide a ball into the jackpot area, unfortunately. I enthusiastically advocate for this - this feature in collecting modes is the best thing to ever happen to pop bumpers and needs to be part of Haunted Multiball, and will probably start begging Keefer for it in public if it's not in the next update. If you could, you would definitely need to adjust down the scoring.
Naturally I'll feel real silly if this has already been discussed on the owners group