Start timer at -3.20. Doing that will start right when you start to control Luigi.
Hahaha, I beat it like 30 minutes before I had to leave for work. Got a 15:45 on it, and it has a ton of room for improvement. I made a bunch of dumb moves, but towards the end, I pulled it together for the real hard levels to get cleared without a death, and that pretty much secured the WR. I think I can get sub 14 without the dumb little mistakes I made. I'm shooting for sub 15 tomorrow/today after work