Here is the full list of all 7 Fos achievements.
Get 200 points in Normal Mode
Get 350 points in Normal Mode
Get 500 points in Normal Mode
Last the full time in Time Attack Mode with over 200 points
Last a full minute in extra mode
Get 350 points in Normal Mode with all 3 robots
Last the full time in Time Attack Mode with every robot and get over 200 points each