Advanced Tunneling Finish every test chamber in Chapter 2 of "Portal Proficiency".
Aerial Mobility Support System Bounced 25 times on the repulsion gel with the same vehicle
Centrifugal Convoy Adjustment System Passed through the same portal 15 times
Condolence Letter Delivery Boom 50 test vehicles destroyed in "Portal Proficiency"
Convoyability 10 10 convoys delivered in the Portal Proficiency initiative
Convoyability 20 20 convoys delivered in the Portal Proficiency initiative
Convoyability 30 30 convoys delivered in the Portal Proficiency initiative
Deliverance from Non-delivery First job for the Condolence Letter Delivery Fleet provided.
Entry-Exit Relay Repeater System 30 times back and forth through the same portal
Extended Testing Opportunity Finish every test chamber in Chapter 1
Food and Artificial Sunlight Finish every test chamber in Chapter 2
For More Science! 5,000 Portal Transitions
For Science! 1,000 Portal Transitions
Full Chief Custodian candidate Finish every test chamber in Chapter 5
No Hard Feelings First turret decommissioned
Official Pre-Admittance Finish every test chamber in Chapter 4
Portal Deficiency Certificate 10 times tried to start a test run with an uncorrectly placed portal.
Post-Insignificance Finish every test chamber in Chapter 3
Principals of Portalability Finish every test chamber in Chapter 1 of "Portal Proficiency".
Profound Portal Proficiency Finish every test chamber in Chapter 3 of "Portal Proficiency".
Spectacularly Lonely Finish every test chamber in Chapter 6
Tunneling at Full Capacity Maximum amount of portals successfully used in a test run.
You monster. 100 Test Vehicles destroyed
여담
포털의 "송신 완료" 도전과제는 2010년 3월 1일 패치 때 추가되었고, 그 후 포털 ARG가 시작되었으며, 결국 포털 2가 발표되었습니다. 3월 1일의 업데이트 때 포털에서 26개의 라디오가 실험실에 추가되었습니다. 이 26개의 숨겨진 메시지는 모스 부호와 SSTV 신호로 이루어져 있는데, 포털 2와 관련된 그림들을 나타냅니다.