The fourth and final burst of Cave Johnson has been released by Valve, featuring the ever-so-handy long-fall boots from the first game.
Watch them in action, below. Or, if you’ve missed any of the previous three Aperture Science spots, head over to here for the ‘Turrets’ trailer and links to the other two.
Portal 2 is due out on 19 April in the US and 21 April in Europe.
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