Considering how the Prophecy states that “They'll hear the ring of heaven's call” and “They'll see the tail of hell take crawl” the heroes probably will witness both some sort of heaven (probably the Angel's Heaven mentioned in Ralsei's version) and some sort of hell. But that may happen as a cutscene and not as a gameplay part. However, even if we will visit both of those spectacular places, it probably won't be in chapter 5 considering the dark world will most likely be in the Flower King. But I'd bet on chapter 6: we still have chapter 7 (honestly I really want for it to happen in the bunker), and it seems like a perfect placement: the heroes will witness both events before banishing the heaven and then stop the hell when it will spread on the world. But what do you think?
(Also I hope y'all don't need a TL;DR this time. Oh I forgot y'all are Undertale fans omg)
I think Hell is metaphorically the depths, which is derived from Gaster as the metaphorical devil, while heaven relates to the angel, who is the player of the game and cannot be directly interacted with by characters, but there might be some sort of heaven imagery when the angel’s presence is revealed and dealt with
@Vexodus Being the pro gamer that I am (aka no life no money no home no friends no bed no floor no roof no bitches), I can confirm that the roaring knight is a FRAUD! (I say as I still attempt to no hit zir)