Make It Rain: Love of Money

Once you reach 50BB in this game, the game completely bugs out and gives you infinite money. It's a bit RNG when you hit 50BB (I got 50BB at once from 1 chest after 3h of playing) but once you do you can safely buy everything needed for achievements.

See link for extra confirmation > https://steamcommunity.com/app/615400/discussions/0/1693797713970782107/

Here you can see that you can also get it by getting a lot of money during the golden minute (autoclick) or other ways that give you fast money.