I see one option, this is the deadliest room in the location. And the situation is created in such a way that you are in a trap, there is not a single profitable outcome other than cooperation with Gortash. Steel guards are everywhere, bombs, flamethrowers and Wil's father are against you.
By the way, I figured out how to solve the situation with the dialogue. The steel guard must be given the opportunity to use the silence spell in some way. Then, by surrounding the group and Gortash, they will be able to create a dome in which everything can be heard, but not heard from the outside. Maybe a steel guardian shield or something like that
