Peekaboo!!!!
If you hold L trigger and move L thumbstick left, right, up, or down, you can peek out of cover quickly to shoot. This is useful for those levels where there's swarms of Germans firing at your, or those multiplayer pals that work your nerves and push your buttons by charging at your and firing, of spread-firing.
We have more cheats and tips for this game here, Medal of Honor: Frontline cheats
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