This page contains Metal Gear Solid: Portable Ops Plus Unlockables for PSP called "Boss Rush Mode" and has been posted or updated on Nov 21, 2007 by hakeldesfaisk. Let us know what you think of this Unlockable by thumbs voting.
Boss Rush Mode
To unlock Boss Rush Mode, have a gamesave of Metal Gear Solid Portable Ops on your memory stick, then start a new game with it.
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