Hard badge should come with the warning: "May cause a case of terminal boredom."
Of course, I got the 100k points before suiciding and then saw the bonus points for days survived, so you wouldn't have to play quite as I did to get the badge.
Average game. turrets are inaccurate and useless, as is the weapon upgrade. Don't like the rectangular playing field creating vulnerable zones. Square or round would have been better.