Here is the full list of all 23 OnlyFuck - there are RuRu's Adventures achievements.
Complete third week
Complete twelveth week
Close your first account and get some Kudos
Complete eleventh week
Complete tenth week
Complete nineth week
Completer eighth week
Reach 1000 Followers
Complete seventh week
Complete sixth week
Complete fifth week
Reach 500 Followers
Complete fourth week
Get $1000 in bank
Complete second week
Reach 100 Followers
Publish your first video
Reach 50 Followers
Complete first week
Pick a Strategy
Answer 1 direct message
Complete your first Lewdoku
Create your first OnlyFuck account