Bridge Constructor Portal Achievements Full list of all 26 Bridge Constructor Portal achievements. It takes around 15-20 hours to unlock all of the achievements in the base game on Windows.The base game contains 16 achievements, and there is 1 DLC pack containing 10 achievements.Filter Achievement View View Image viewList view Sort by TrueSteamAchievement desc TrueSteamAchievement asc Achievement name desc Achievement name asc TSA Ratio desc TSA Ratio asc Gamers desc Gamers asc Steam order Date won desc Date won asc DLC Packs Group DLC packs together in list DLC Filter AllOwnedNone Flag Filter All None 26 Offline Mode 26 Single Player 10 Main Storyline 1 Missable 15 Cumulative + Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply Base Base Game (Excludes DLC) 313 16 3.693,362325 (10%)15-20h Extended Testing OpportunityFinish every test chamber in Chapter 1 Food and Artificial SunlightFinish every test chamber in Chapter 2 Post-InsignificanceFinish every test chamber in Chapter 3 Official Pre-AdmittanceFinish every test chamber in Chapter 4 Full Chief Custodian candidateFinish every test chamber in Chapter 5 Spectacularly LonelyFinish every test chamber in Chapter 6 Centrifugal Convoy Adjustment SystemPassed through the same portal 15 times 1 guideEntry-Exit Relay Repeater System30 times back and forth through the same portal 1 guideNo Hard FeelingsFirst turret decommissioned 1 guideAerial Mobility Support SystemBounced 25 times on the repulsion gel with the same vehicle 1 guide66% Loss20 Convoys delivered 66% Delivery40 Convoys delivered 0% Non-Delivery60 Convoys delivered For Science!1,000 Portal Transitions 1 guideFor More Science!5,000 Portal Transitions 1 guideYou monster.100 Test Vehicles destroyed 1 guide Add-on Portal Proficiency 198 100 10 0.00659285 (43%) Principals of PortalabilityFinish every test chamber in Chapter 1 of "Portal Proficiency". Advanced TunnelingFinish every test chamber in Chapter 2 of "Portal Proficiency". Profound Portal ProficiencyFinish every test chamber in Chapter 3 of "Portal Proficiency". Convoyability 1010 convoys delivered in the Portal Proficiency initiative Convoyability 2020 convoys delivered in the Portal Proficiency initiative Convoyability 3030 convoys delivered in the Portal Proficiency initiative Portal Deficiency Certificate10 times tried to start a test run with an uncorrectly placed portal. Tunneling at Full CapacityMaximum amount of portals successfully used in a test run. 1 guideDeliverance from Non-deliveryFirst job for the Condolence Letter Delivery Fleet provided. Condolence Letter Delivery Boom50 test vehicles destroyed in "Portal Proficiency"