Just add a difficulty slider... I tried playing solo with some cheats after everyone else had given up and it really just gets more and more stale, aside from smashing your head against the wall 59 times to complete one mission because you lose all your hours at death, the mission just get longer and more repetitive. Maybe they thought the "great atmosphere" (It wore off after the tutorial) wouldn't be the same without the threat of losing all your hours because of one mistake, but i believe that can be left up to the player(s)