For those of you trying the Easter Challenges and having problems with the Hard boiled challenge, I have looked online and apparently a lot of people are having problems with it. 

     I finally unlocked it, and as far as I can tell, you have to overheat, as soon as you start to shut down, you have to instantly hit the override. You have to be FAST getting on the override. As soon as you hit override, the mech will come back on line. Leave override on, live, get a good match score. That should get you the challenge. 

     As far as I cant tell, the issue lies with hitting override in a timely manor. You have to let the mech overheat, so you cant hit it before it overheats. But you have to hit the override, as soon as it starts to shut down.