Professor Portal achievement in Portal 2

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before

Professor Portal0
6 guidesOnline Game ModeCooperativeViral
Gamer Gamer Date Won
USA JORAX JORAXComing soon: more Minecraft achievements. Some will rejoice, some will complain :). 31 March 2011
DerEnglaenderO DerEnglaenderO 16 April 2011
England dschejms dschejms 16 April 2011
USA Doomed Smurf Doomed SmurfSleeping, eating, gaming...rinse, repeat 18 April 2011
USA Amymazy Amymazy 18 April 2011
Finland Healtti HealttiHappy Next Gen, everyone! I hope all who pre-ordered got theirs. You spend $ on a game, but good tech is an investment. That's how I look at it. 18 April 2011
iSkwerl iSkwerl 19 April 2011
Iran Staalkir Staalkir 19 April 2011
USA ThePaleHorseman ThePaleHorseman 19 April 2011
vashlheowner vashlheowner 19 April 2011
USA Unseen 5hadow Unseen 5hadowNow to go for 100% completion on everything!!! 19 April 2011
OysterMeister OysterMeisterRedshift is love, Redshift is life 19 April 2011
machinehead76 machinehead76 19 April 2011
USA UNeakOne UNeakOne505 Games is complete and utter TRASH. 19 April 2011
Robo Jews Robo Jews 19 April 2011
USA ERINYESHAMMER ERINYESHAMMERTONIGHT. YOU. 19 April 2011
Canada Ghost Slayer Ghost Slayer 20 April 2011
Penitent12b6 Penitent12b6 20 April 2011
LazHimself LazHimself 20 April 2011
USA PizzaAndPubG PizzaAndPubG 20 April 2011
ExodusRW ExodusRW 20 April 2011
Sarge Hall Sarge Hall 20 April 2011
Hong Kong IMxOI IMxOI 20 April 2011
USA The Game Guild The Game GuildI need to sit down an actually play something. 20 April 2011
DegenerateSanik DegenerateSanik 20 April 2011
Caboose3232 Caboose3232 20 April 2011
JOINT F Kennedy JOINT F Kennedy 20 April 2011
Falling Phoenix Falling Phoenix 20 April 2011
Reaper1896 Reaper1896 20 April 2011
Skyrix Skyrix 20 April 2011
Triliflops Triliflops 20 April 2011
USA KryptCeeper969 KryptCeeper969Veni, Vidi, Vici 20 April 2011
Man 0f Prophecy Man 0f Prophecy 20 April 2011
JTownBlast JTownBlast 20 April 2011
I DIRTGRUB I I DIRTGRUB I 20 April 2011
Destude Destude 20 April 2011
USA BOD OF TOD BOD OF TOD 20 April 2011
EqUiNoX WoLf EqUiNoX WoLf 20 April 2011
Aesir Renegade Aesir Renegade 20 April 2011
Sh4rdy Sh4rdy 20 April 2011
Australia Samver2 Samver2 20 April 2011
USA MailOrderCowb0y MailOrderCowb0y 20 April 2011
USA SatanicHeretic SatanicHeretic 20 April 2011
Clinik Clinik 20 April 2011
USA BigLittle BigLittleCashing check and breaking necks. 20 April 2011
SergeantWesley SergeantWesleyWar, War Never Changes, But Men Do, Through The Roads They Walk 20 April 2011
USA IKL Dead Man IKL Dead Man 20 April 2011
SIiz SIiz 20 April 2011
Australia Refused II Refused IIXBL|Refused II // PSN|Refused_II // Steam|refused_ii 20 April 2011
ThatOtherAdam ThatOtherAdam 20 April 2011