I found that the insta-win works best on kongregate, but it can also work the first time on engineering.com

So when you start a new game, animations have to be currently enabled. This is the default whenever you start playing the game. Then, when you hit "Story mode," you have to quickly hit the menu gear at the top left corner, before the animation stops and the words go away and fade into the cutscene. Then, if you did it correctly, you turn the animations (both) off and hit "quit game." It should result in an insta-win.

First, if your category is NMG, then you would want to have all of the necessary upgrades unlocked already.

This would mean max level gravity balls, phoenix feather, money book, air glide 3. However, I would recommend to have all of the upgrades unlocked. An easy way to farm bp is to use the insta-win as shown in this video: