View full achievement list for Bridge Constructor Portal
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Extended Testing Opportunity

50 Gamerscore

Finish every test chamber in Chapter 1
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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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Food and Artificial Sunlight

50 Gamerscore
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Condolence Letter Delivery Boom

20 Gamerscore
More achievements
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Official Pre-Admittance

50 Gamerscore
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Tunneling at Full Capacity

10 Gamerscore
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Post-Insignificance

50 Gamerscore
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You monster.

70 Gamerscore
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Condolence Letter Delivery Boom

20 Gamerscore
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Aerial Mobility Support System

70 Gamerscore
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Principals of Portalability

10 Gamerscore
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Convoyability 30

30 Gamerscore