Luckily that's easy to fix. I'll fix it in the next patch.
It shouldn't prevent you from getting a gold trophy. All of the silver/gold levels are based on what people were scoring here during playthroughs. So a bug like this would effect their scores also.
Depths of Peril, Kivi's Underworld, Din's Curse, Drox Operative, Zombasite, & Din's Legacy