Underground, exploring a series of crypts and catacombs, the mighty heroes were set up on by a string of foes in close combat: bug men, a ghast, and a mummy. Fate was on their side, and they vanquished their foes and lived to fight another day!
That's great. What I didn't think was so great was that the party was engaging all those enemies at point blank with missile weapons. Standing directly adjacent to their foes, they'd fire their bows and launch their sling bullets, rather than switch to daggers or swords.
Apart from the very minor problem of the lack of "realism" in this weapon choice, there is a real problem: missile attacks always precede melee attacks in M&M. That means that by sticking with bows at point blank, the PCs can always get their attacks off before melee-only enemies.
In some versions of D&D, using a missile weapon when adjacent to a foe would invite an immediate free attack by that foe. This acts as a useful penalty to prevent this scenario (although the edition that introduced this rule had already eliminated the notion of missile attacks preceding melee attacks).
I'm looking for a rule in M&M that prevents this behavior.
Although I am interested in good suggestions of "house rules" to address the problem (such as introducing free attacks on in-range archers, or moving archers-in-melee-range into the melee phase), I am much more interested in any rules that already exist in the rules as written. I have looked for them and, so far, found nothing.