Survival Mode


Would be awesome to have a survival mode where one can fight story-mode-like levels round after round with each increasing in difficulty until all your heroes die. It can even be all the story mode levels stitched together to see how far one can go with only one set of heroes. Points could be awarded as a new profile statistic and of course good loot would be nice. No flags would be consumed; just a time killer option if we are waiting on titan respawns and such.