I may go try the Courier's Mile, though it's likely a mostly suicide mission, even when I'm level 50. It's basically a cuter-looking minigun (firing a different round), much like the cyberdog guns at the Big MT. I found the shoulder-mounted guns to be rather. Those rockets don't seem to kill any one even when I empty the whole magazine at someone. Also picked up the Red Glare rocket launcher which seems to be WAY underpowered.
If they *are* aware of me then I resort to my SleepyTime 10 mm SMG (silenced) and maybe a grenade or two.
it just PWNs everybody if I can catch them unaware, even deathclaws, and I can easily pick up AP ammo for this off almost ANY of the marked men. I brought along the Anti-Material 50 cal rifle. It's a pretty short DLC comparing to others.