Teenage Mutant Ninja Turtles Mutants in Manhattan

Using Bebops stage would be the easiest way to do this as the Gold spawns right next to the drop off. However actually getting the mission to appear is.... kinda challenging. I have reason to believe mission spawns are all location based with your Turtle rather than just pure RNG however. It seems if you are nowhere near the area of the gold bar location you have greater odds as I can normally get the hideout missions to trigger when I stand around where the Bank is.

At any point in the stage head to the Liar (or get lucky and get one from a red crystal in the sky) and get the Red Soda (Power Drink) as it gives you strength to carry objects. Make sure you drink it before you trigger the Gold Bar mission as I do in the video below as your AI WILL pick up the Gold asap and we don't want the AI to mess with our Gold. You'll be so fast with the Gold after drinking the Soda that nobody will be able to touch you if you just haul your green butt to the drop off. It's incredibly close should take only a few seconds to get the achievement done.

Yoda Y21 adds that using the invincibility ninjitsu helps as, "It lasts long enough so you can't be touched the entire time you're running the gold bars. Invincibility + power soda = achievement."