Thank you for the kind words! The goblins did have footstep sounds, it was my first time using 3D audio, so things might not have been as good as they should be. The audio got kind of messed up by the HTML 5 export resulting in a lot of static and popping sounds. I think there may have been some inefficiencies with loading some of my shaders that caused some really bad audio stuttering in the web.
I'm glad you noticed the goblins in the background. I tried to pick camera angles that would give you a look at them walking around in the background after you had gotten past them. :)