This is on very hard difficulty, only the fighting. If you die during (Don't Fear) The Reaper's secret ending called "Suicide Run," the game will end and pretend you committed suicide. Essentially you solo the end fight through the hordes of Arasaka goons, robots and mechs and then facing the final boss, all of that without any friends or allies. If you don't know how to get to this secret ending, check the internet, there are detailed wikis. It is the second time I played the Suicide run but the first time I played it on very hard and at the time, without any HUD elements except some mission markers that cannot be hidden. It was quite an adrenaline rush, knowing that dying would end the run... you really don't want to do up to some 25 minutes of fighting like that again and again. I was happy I managed the first time. Enjoy :)