In Medal of Honor: Warfighter for the PC, PS3, and Xbox 360, you dedicated first person shooter guys can unlock Tier 1 mode, which takes away the HUD entirely to give you more of a true war style game.
I’m not sure, but isn’t Tier 1 supposed to mean something like entry level? I’m not sure about the naming convention here.
Anyway.. to unlock Tier 1 mode, you just need to beat the game on Hard difficulty.