Dragonheat
Shop-based
Achievable on a short singleplayer game: YES
Cost 6$
Part 1:
Sexcalibur arc: Fun
Exclusive chapter: Creatuve
Part 2:
Damien’s Tinder: Creative
Scoundred: Charm
Part 3
Ask nicely: Charm
Fanfic: Creative
Afterward, go to prom alone and enjoy.
Cult ring
Shop-based
Achievable on a short singleplayer game: YES
Cost 7$
Part 1:
The truth: Bold (reward: 2 Charm, 1 Bold)
Eat my entire body: Creative (2 Smart, 1 Creative)
Part 2:
Bonds of friendship: ?
Dinosaur: Creative (2 Fun, 1 Creative)
Part 3
Cereal: Creative (2 Bold, 1 Creative)
Secretly: Fun
Part 4
Money: Money?
Ask Vera: Smart (2 Smart 1 Bold)
Afterward, go to prom with Vera (not alone!) and enjoy.