I agree that the shield is your best and most realistic option. To quote off of the Atomic Rocket Website,
"As a side note, a Whipple shield is very effective at stopping hypervelocity weapons. With kinetic weapons at closing velocities in excess of 10 km/sec, you're getting into the realm...
So, I have been designing a game that uses Lego models to create spaceships that you then maneuver on a floor and do battle with. And one of the goals of this game is to be as realistic as possible, within the limits of a 2D environment.
With that in mind, I have created a system that...