The Jack-of-all-Trades achievement in Baldur's Gate 3 instructs players to multiclass into every class in one playthrough without asking Withers to change their character. While it is certainly possible to earn this achievement without any tricks, it does require fans to invest in a fairly non-traditional playthrough. For those players that are not interested pursuing such a playthrough, but still want to earn the achievement, this guide details a method that can be used to "cheese" Jack-of-all-Trades in Baldur's Gate 3.