(11 years ago) Very interesting !
I got to 10 off, in 8 tries (if I was heading to the correct exit ... lol ). Will be back :D Edit1: 6 off Edit2: 4 off, on a different path. :) Edit3: almost a year later: 2 off. Edit4: 223 tries. And still don't understand the right down corner. *-*
EDIT 2th Oct., 2023: I finally beat it. The down right corner is soooo weird. :D :D :D
Found Happiness to be way harder just because of the large amount of different ways to get 2 off. With this one, I found there to be less room for experimenting because everything was pretty straight forward and not really any other paths to take (except for the 2off cut).