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