Amy Rose is Alive in Fiercy Forces.

Ok... How? I can only say this one thing for now...

Because, Silent "The Player/Avatar" has "SAVED" Amy, during her mission
on gathering the Night Gurads from the previous Pizzerias in the Comic:
Five Nights at Sonic's Mergedverse World (An Addon).
(Just like Shadow Sonic was gathering all Golden Sonics' and took them with him. Which this event also will be in that Comic for curiosity).
That Comic will be drawn in the future.

Sorry, no more spoiling.

Also spoiler alert for the upcoming Short Comic.
Do you see what she is holding in her hand??
Mecha Balloon Toad... you are in a big trouble!