Hi guys, i need a little help. I would first apologize for my bad English. I'm still learning, i'm sorry.
In ''Portal'' there are 3 unlockable achievements in the advanced test chambers: the first is unlocked if you exceed 2 advanced test rooms, the second if you exceed 4 rooms and 3 if you exceed 6 rooms. What I can't understand, is why I unlocked the archievement of the 2 rooms (pastry) and the archievement of the 6 rooms (super vanilla cake), but not that of 4 rooms (fruit cake) .. can someone help me? I have already tried to play again 4 advanced test rooms, but it still does not give me the archievement.