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Immediately after unlocking "Nice Try," walk back to the terminal.

After the terminal boots up, it will ask you to press [ Register or Signin to view external links. ] to continue. Select '! File Corru-*(# ???'.

Walk into the simulator. As you walk forward, the achievement will unlock.

Continue walking to the light at the end. Once you walk through the door, you will be back at the main menu.

The reason why this is missable is because to continue on with the story after you unlock "The Infinite Loop", you have to select the corrupted file on the terminal or else the story will not continue. Now you can do one of two things, step into the simulator after selecting the memory or not. If you continue to stand there, the AI says, "In 6 seconds the field containment will collapse and the memory will be lost forever. You must decide now". If you wait, the simulator will power down and you can then select another memory. If you select the corrupted file again, the AI says that it is not accessible anymore, thus being missable.