I would have loved to have bought the achievement hint pdf but my bank doesn't allow purcheses on itch,io. So I'm unsure of what to do. :(
Viewing post in Darkness Calls the Raven (Demo) comments
Unfortunately developers don't have much control over purchases made on itch, but I created a ko-fi page which contains any add-ons in relation to my games: https://ko-fi.com/ravennights/shop
You can always try purchasing it through there instead.
Thank you for the support! ♡