View full achievement list for Bridge Constructor Portal
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Centrifugal Convoy Adjustment System

70 Gamerscore

Passed through the same portal 15 times
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Bridge Constructor Portal

Enter the Aperture Science Enrichment Center and experience Bridge Constructor Portal – the unique merging of the classic Portal™ and Bridge Constructor™ games. As a new employee in the Aperture Science test lab, it's your job to build bridges, ramps, slides, and other constructions in 60 test ch...

Enter the Aperture Science Enrichment Center and experience Bridge Constructor Portal – the uniqu...

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Entry-Exit Relay Repeater System

70 Gamerscore
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Spectacularly Lonely

50 Gamerscore
More achievements
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Convoyability 10

10 Gamerscore
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0% Non-Delivery

70 Gamerscore
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Official Pre-Admittance

50 Gamerscore
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66% Delivery

70 Gamerscore
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You monster.

70 Gamerscore
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Condolence Letter Delivery Boom

20 Gamerscore
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Convoyability 30

30 Gamerscore
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Centrifugal Convoy Adjustment System

70 Gamerscore