Originally Posted by tripleb2k
Thanks! I got it now. Wish the achievement actually said, 'at the same time' for noobs like me haha.
Thanks again! hopefully this helps with other people too.
It says have all 3 running at once which is the same thing lol
100% Retail Achievements(15):
Most Recent - Portal 2
100% Arcade Achievements(11):
Most Recent - Millionaire?