Medal of Honor
50 Achievements
1,000
30-35h
Multiplayer: Heavy Fire Support
Fire 1000 bullets in a round (awarded at end of round)
15
How to unlock the Multiplayer: Heavy Fire Support achievement in Medal of Honor - Definitive Guide
Fundy1842 brought to my attention that using emplaced guns will NOT count towards this achievement.
Also, why in the hell would someone vote negative on your solution? Makes no sense to me.
(I do not recommend using your pistol here if you join a match that is already started or you have a bad trigger finger, I joined in the middle of the match and just used my M16/Ak47 and still managed to get this one).
Choose Either a Rifleman or Special Ops. Now use any Automatic weapon, and fire as much as you can in a single game. If you run out of ammo, run to an ammo box to pick up extra magazines. This should come naturally to you, but if you are having troubles follow this method.
Choose an Automatic weapon. Find an ammo box. Keep shooting your gun until you run out of ammo. Pick up more ammo from the ammo box and keep shooting!
UNOBTAINABLE DUE TO SERVER CLOSURE
This trophy should have been called Ammo Hog. Pick the PKM Machinegun and keep firing. On your minimap you will see icons of 3 Bullets with a Plus sign beneath. These are ammo crates and your ammo will be replenished when you are in that area. You can play Combat Mission and hang out at the back near one of these crates and shoot into the sky to achieve this trophy.