This is pretty creative elaboration from the theme. I sure like the concept. I think this can be improved by defining exactly what is "point blank" (put a circle around the enemies?)
I like that idea, since it gives the player more information to make strategic decisions (or at least to avoid an unintentional death).
The phrase "point blank" was intentionally left vague due to the way the bullet spread was coded. Depending on the angle, the player might not always get hit even if they are in close proximity to the enemies; it is just much more likely.