Improper Behavior
How To Unlock: Spraypaint all Zombrex posters.
Tips[edit | edit source]
Throughout the game, you’ll find zombrex posters of various shapes and sizes. These must be done in one playthrough and you'll need to play up to a certain part in the story in order to unlock doors which have two more posters behind them, so I suggest doing this on your storyline playthrough.
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