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.
60 Convoys delivered
Finish every test chamber in Chapter 6
5,000 Portal Transitions
Finish every test chamber in Chapter 5
30 times back and forth through the same portal
Bounced 25 times on the repulsion gel with the same vehicle
40 Convoys delivered
Passed through the same portal 15 times
Finish every test chamber in Chapter 4
1,000 Portal Transitions
Finish every test chamber in Chapter 3
100 Test Vehicles destroyed
20 Convoys delivered
Finish every test chamber in Chapter 2
First turret decomissioned
Finish every test chamber in Chapter 1
30 convoys delivered in the Portal Proficiency initiative
Finish every test chamber in Chapter 3 of "Portal Proficiency".
Maximum amount of portals successfully used in a test run.
20 convoys delivered in the Portal Proficiency initiative
Finish every test chamber in Chapter 2 of "Portal Proficiency".
10 convoys delivered in the Portal Proficiency initiative
Finish every test chamber in Chapter 1 of "Portal Proficiency".