Having trouble sneaking in the Golden Grind Heist? This guide is for you! lemme know if there are any other. The Golden Grin Casino is the sixth and final heist given by The Dentist, having given all in Las Vegas and is also the first non-Washington D.C heist in PAYDAY 2. Three color-coded numbers, stored in briefcases, need to be located. Package locations : 27. of Payday 2 masks. /r/paydaytheheistmods - A subreddit all about modding Payday 2, and discussing said mods Golden Grin Casino text-based stealth guide. Inside the safe, is a briefcase with 1 of the 3 vault numbers.