Killing Floor Flag

From the Portal Wiki

The Killing Floor Flag is a jiggleboned item that attaches to Atlas and P-body's antenna. It bears a drawing of a biohazard symbol from Killing Floor and was awarded if the game was played the most out of the Potato Sack games.

Killing Floor Flag
Item KILLING FLOOR FLAG.png
Basic Information
Worn by:Atlas, P-body
Slot:Misc
Price:$0.49 / £0.29 / 0.39 / 15rub / R$ 0.83
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Item
Backpack KILLING FLOOR FLAG.png
KILLING FLOOR FLAG
Level 1 Flag