ive been thinking about this for a while, and this is sort of a question about your opinion on classic undertale and about this au, and the question is in fight why do you think we only have up to 3 options when it comes to act? thats not including check. also in caretaker, is it the same? i ask about what its like in caretaker because i dont remember seing any fights in the comic so far, or at least any long ones
This limit of 3 ACTs is not always the case.
In any case, this is the limitation of Undertale being a video game. For every ACT, Toby would need to add unique flavor text and appropriate reactions from the monsters. The game allows a limit of 6 choices in the menu (including Check), but Toby probably didn’t have enough ideas to fill out the menu for each monster.
Caretaker is a comic so limitations such as this would not exist. There is no choice or selection by a “player” after all. That said, we did make a subtle callback to the menu option when Frisk is cornered by Chara on pages 26-27. Frisk makes several attempts to stop Chara: Threaten, Attack, Talk, and Flee.