I dont know if something like this exists, and if it exists, im sorry but here is my tactic.
So: You start, and go always in a circle, from island, to island
You go up, then right,then down, and keep going like that, always around the middle, and never get to the same place again, since you just get new enemies slow, and you keep sticking at the ones you already had, you earn much bubbles,always go in a circle, then you will also find the boss somewhen, he is very hard, but normally you should get him easily down (With Superheavy).
Here is how ive went:
1st: Balanced 2nd: Balanced 3rd: Balanced Heavy 4th: Super Heavy
Im not sure if thats right, maybe i missed a class, but atleast, you should get BFT Carrier or Superheavy to have a chance, also: after you killed the boss, you can go into the menu, or play in invincible mode. (<- Nice to get all enemies seen)
