The Portal Proficiency Add-on for Bridge Constructor Portal has 10 achievements.
Finish every test chamber in Chapter 1 of "Portal Proficiency".
Finish every test chamber in Chapter 2 of "Portal Proficiency".
Finish every test chamber in Chapter 3 of "Portal Proficiency".
10 convoys delivered in the Portal Proficiency initiative
20 convoys delivered in the Portal Proficiency initiative
30 convoys delivered in the Portal Proficiency initiative
Maximum amount of portals successfully used in a test run.