By my counts, which are sus at best
Ch1-30: Loose the potion mini game during the bet between the 2 other students
Ch 2
14: Wait when you encounter the spider
34: Refuse to tell the spy master about the guy with curse
42: Win the fight on the 3rd excursion with the blacksmith
55, 58, and 60: I'm in the same boat
64 and 65: Are hidden ones, I believe by clicking certain areas on the town map