It sounds as though we'd be able to do it in a non-D&D RAW way in BG3 if we didn't up all relevant stats to 13 to meet multi-classing prerequisites, but if we honour that in our build I'd understood it was actually permitted by the D&D rules as per this vid, which is presumably the inspiration for the achievement ...
That video was hilarious
I've played some pretty absurd characters before, but those were that way purely due to the way RP unfolded for them. My all-time favorite character was in 3.0... a fighter/rogue/cleric. He wasn't a great healer, but Darkness + Ultravision + sneak attack was hilariouly OP against many enemies. We didn't play with epic levels though.
