Originally Posted by elmntdark
I can confirm that this still works as of today. (January 15 2012)
I just finished the whole shebang in one go.
UNLOCKING SUPERHUMAN Difficulty
3. Go to Load Level and load the LAST checkpoint of every level on Hard difficulty.
Just want to clarify this step. Do we beat that part of the level, or simply save and exit out? I thought I had unlocked superhuman but I was mistaken. Thanks!