I have limited internet access and played through Portal without being online. As a result, several of the achievements didn't unlock. I later went back and played through a second time online to try ...
My account on Xbox live says that I haven't gotten the "Vanilla Crazy Cake" Achievement but I actually have completed the achievement and when I load up Portal and look at the achievements in the game ...
One of the challenges in Portal was to try to complete certain levels while taking a minimum number of steps. Obviously this requires good use of portal placement, but I was never able to get ...