Unlock Tier 1 & Hardcore modes
Tier 1 mode is Hard mode without a HUD (Heads-Up Display), and Hardcore mode has no Checkpoints (if you die/fail, you start the Campaign over). Once unlocked, both difficulties are access by starting a new Campaign and changing the difficulty setting.
Unlockable How to Unlock Hardcore Mode Complete the Warfighter Campaign on Hard Difficulty Tier 1 Mode Complete the Warfighter Campaign on Hard Difficulty
Contributed By: You_Need_A_Life.
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