I wanted to map the listeners to keyboard aswell, but I had trouble with callbacks =/ There should have been more possibilities for each NPC, apart from talking... RPG like combat, I even semi-implemented a weapon system. I also had a health bar, which is even visible on one of the screenshots. I ended up using it as a volume-change bar, since health wasn't needed after all...
In fact, I wasted a lot of time on things I never used... The entire text within the game is dynamic, all I'd need to do would be a button to change the "language" parameter, and the entire game would be translated (if I actually put the translation into the text arrays).
I planned to add a lot more variety to the intro aswell. I know that it totally sucks. My plan was to give the player hints through sound, making you basically listen to your environment during the blackout. I ended up recording myself tossing things around, banging at my desk and making weird noises. I don't like the intro, and honestly, I never liked the theme. It was one of the few I rated -1, since I found it to be waaaay too limiting. Limiting any action to 10 seconds, or making the game last 10 seconds was nothing I ever considered, so I ended up making the intro last 10 seconds instead.