One of the things about D&D is that it can be played at any level of scary. You can play it solely as a puzzle game with no fighting if that is what works for the players. For example a rogue has taken on the job of acquiring a valued gem that is kept hidden in a trapped vault. No creatures are guarding it, just numerous traps. How WILL he do it????

Honestly I've played a version with little kids (under 5) that just involved some dice rolling and saving a unicorn.
I worried the pictures will bother him. He doesn't even want to get bionicals by lego. He had bad dreams a while back. He's really not whimpy, very boyish, but very sensitive to monsters and weapons. Maybe he is worried these things will bring back his dreams. I don't want to push him to have something he is not comfortable with.
I wonder if maybe I looked at a different version of this game then you know. It sounds great.