Pretty sure I heard that you can rush this stage with the right setup but this also gets the job done just fine.
Anyways stage is pretty tough because it has multiple hackeys with 300% metal seals and three different types of gories. the black and zombie gories don't pose much of a threat it's the angel ones you need to be aware off it's pretty hard to control them because of their fast speed and high damage allowing them to easily dig into your stack putting you in a bad position, but this is one of the stages where miasma actually does a pretty good job. You still want to put him to 40 though because his stats don't look that good at level 30, but miasma does a pretty great job at controlling the angel gories allowing you to keep your stack and push forward. You really want to keep hackey in mind when playing this stage because it's important that you get as much units through as possible so you can form a big strong stack. It's very attractive to lure during the zombie phase but that most of the time gets you killed because it's harder to stack on zories than on those guys. So I decided to just use holyblast and the remaining distance to deal with the zories and the final metal seal. I did some experimenting around with other cannons but holy blast worked out the best and I did some swapping between ld units like medalist, hermit and manic legs and in the end I felt the most comfortable with manic legs. Pretty cool stage and ofcourse dark lazer talents are exellent here.
Holyblast is level 20 (any level really works but the extra chip isn't bad either).
Optional talent: Pizza wave (could actually save you in the end but I don't think it's really needed.)
Jones' strat (starts at 2:20, dark lazer with rich cat and sanzo talents):
• Video