This is what I did for assignment 6. I applied  "Play Animation" and "Stop Animation"for each of the walking zombie. I made the zombie at front the trigger object and set animation for him as well. I also applied "Audio play", when the player walks into the trigger zombie's area of the box collider, a funny music starts to play, when he or she walks out of the area it stops. What a pity we cannot hear it from the screen record.

Update: last time I forgot to include the Playmaker interactivity window in screen recording.