Easter Egg on Crow's Nest (Second level)
In part of the second level, there is a door with a marine outside. If you listen closely you'll hear the marine asking if he can come in for ammo and supplies, and the guy on the other side asking the marine for the password, but the marine doesn't know it! (Their dialogue changes depending on the difficulty). They carry on arguing and in the end the marine will carry on banging the door and the marine never gets in, what a shame!
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