This would be possible, but would take two days or so to finish(if you played it 24h straight)... So have anyone actually tried this? I'm planning to restart the game on the weekend and see if i can pull this off... Because basically, I have 25h play time, and I've come to chapter 5, 54 and have come to Lv 36.. So I think this could be done^^ I haven't seen any particular speed runs through this game though...
"Close your mind,
and
Open your heart."
-Swedish House Mafia