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  2. Portal 2
  3. Calibration Course?

User Info: Fastest_Spartan

Fastest_Spartan
10 years ago#1
For the Professor Portal achievement, it mentions playing a "Calibration Course". What is that?
Nope...

User Info: frailporpoise

frailporpoise
10 years ago#2
It's the first course of the co-op mode

User Info: Fastest_Spartan

Fastest_Spartan
10 years ago#3
Oh, that should be easy then. Now I just need to find someone who hasn't played yet (after I beat it). Thanks.
Nope...

User Info: frailporpoise

frailporpoise
10 years ago#4
Just read the achievements section and it looks like you need to complete it with someone who has never done co-op mode before after you have cleared all co-op areas.
  1. Boards
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  3. Calibration Course?
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co op achievementsGrenouille7117/15 9:45PM

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