I've got a few ideas then.
Scene: Main Character fights boss.
Boss: The ritual is almost done.
Acolyte: Umm... ...actually its been done for some time now.
Boss: Really?
Boss: At last the ritual cake is mine!
Main: I wouldn't count on that.
Main: The cake is probable a lie.
Boss: This cake isn't and I can prove it.
(Boss eats slice of cake)
(Nothing happens)
Boss: Dammit. It needs more souls!
(Acolyte eats a piece)
Acolyte: Yes it needs more.
Boss: And I know where to get it.
Main: You'll never get any souls from me!
Boss: Oh I wasn't talking about you.
Boss: I was talking about my acolyte.
Acolyte: No!
(Boss kills acolyte)
(Boss eats another slice of cake)
Boss: Compliments to the chef.
(Chef Cthulu: appears)
Chef Cthulu: My pleasure.
(Chef Cthulu disappears)
(Main gets a choice)
/ \ \
Main can fight the Boss or run away or not fight.
If Main fights and kills Boss. If Main runs away nothing happens If Main is peacefull.
Boss: Noo!!! My only regret is that I didn't get another slice of cake! Boss: Here have a slice of cake.
Main can eat cake if he wants. Main can eat cake if he wants.
None.