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Advanced Chambers is a new feature from Portal, to Portal 2: Episode One. They are much harder versions of the older tests you've beaten. An advanced chamber requires the normal version of that test completed. Advanced Chambers also have a bit of a challenge added to it. Make sure your advanced chamber is possible before you make it! Bosses can be added here too, but remember to say what makes it an advanced boss!
List O' Advanced Chambers[]
The Evil Wheatley Core is BACK[]
And this time, he is TWO cores! Thats right-Wheatley and a little friend we just met today, wheatley! Wait, what? He got cloned. Double trouble. Triple trouble if you count the fact that he wont underestimate you anymore, and both cores are much deadlier.