Here is the full list of all 31 HumanBloodSandwich achievements.
Finish Scene1
Finish Scene2
Finish Scene3
Finish Scene4
Finish Scene5
Finish Scene6
Finish Scene7
Finish Scene8
Finish Scene9
Finish Scene10
Finish Scene11
Finish Scene12
Finish Scene13
Finish Scene14
Finish Scene15-1
Finish Scene15-2
Finish Scene16
Finish Scene17
Finish Scene18
Finish Scene19
Finish Scene20
Finish Scene21
Finish Scene22
Finish Scene23
Finish Scene24
Finish Scene25
Finish Scene26
Finish Scene27
Finish Scene29-1
Finish Scene29-2
Finish Scene28