Professor Portal Achievement for Portal 2

Professor Portal Achievement

Icon for Professor Portal

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn't played before
1.73% of players have unlocked this achievement

75

Guides

We have no guides for this achievement.

Players

MuckPie

Earned on: Oct 14th 2021, 9:10:39 pm

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Celtic Force

Earned on: Aug 30th 2013, 5:08:48 pm

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Stephan Fenris

Earned on: Dec 11th 2012, 4:22:10 am

Icon for oO bio Oo

oO bio Oo

Earned on: May 31st 2012, 1:13:21 pm

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Legohead 1977

Earned on: May 7th 2012, 10:53:07 am

smrnov

Earned on: Dec 27th 2011, 9:32:34 pm

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Chronic Killer

Earned on: Oct 13th 2011, 6:00:31 am

Icon for Pigimus Prime

Pigimus Prime

Earned on: Sep 16th 2011, 2:01:59 pm

Icon for Koding

Koding

Earned on: Aug 22nd 2011, 5:35:26 pm

Icon for Sangriaz

Sangriaz

Earned on: Aug 8th 2011, 2:50:58 am

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d4rk antares

Earned on: Aug 3rd 2011, 2:25:31 pm

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Wrathofzar

Earned on: Jun 21st 2011, 8:34:20 pm

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The Dauntless

Earned on: May 27th 2011, 6:52:26 pm

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Clad master

Earned on: May 17th 2011, 4:25:02 pm

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otakon62

Earned on: May 10th 2011, 8:03:12 am

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Chicool

Earned on: May 5th 2011, 2:34:27 pm

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Stallion83

Earned on: May 4th 2011, 10:20:55 am

Icon for Lascelly

Lascelly

Earned on: Apr 28th 2011, 8:11:05 pm

Icon for gomuhimo RSC

gomuhimo RSC

Earned on: Apr 27th 2011, 12:54:32 pm

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weffalump

Earned on: Apr 27th 2011, 3:01:22 am