I mainly played interceptor. Felt the audio was weak across most aspects of the demo but on the interceptor it wasn't very strong overall.
Most abilities were lacking in punch. Shurikens barely made any noise. Spark dash didn't do any noise. Same with most abilities.
Sound on the ultimate could have been better. You get this echoey kind of sound but the slices could have been more guttural imo.
I think we have fixed all of that. Let us know what you think after launch!