This is just me, but I always like a little exposition. I'd like to know more about about the characters, the type of person they are, and I'd like to display what exactly the gun is capable of doing, hinting at whats going to happen in the future. Like, how the male character came to order or seek the gun out. What are the characters professions? relationship together? I feel, exposition & backstory makes their behavior make a lot more sense.