Why on earth is this in the EP2 boards and not Portal?
They are springs that help minimise injury when she falls from great heights. According to the commentary playtesters were confused how she managed to fall so far without hurting herself, so they put the springs onto the model to make it clear.
They're knee replacements.
Yes, that's absolutely true.
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My uncle Paulie threw him under the train tracks down there.
Quite funny to imagine 30 people being asked;
So in the game with floating energy balls, magical transportational portals, energy shields and laser levitated platforms was there anything you found suspect?
The answer being "how does she survive a ten foot drop without mechanical legs?"
I eat Lions