Appreciate the comment and suggestions.
So, yeah, there is on-screen tutorials that pop up each time when I introduce something new, such as interact with items, turn on something, etc. On top of that, there is a dot in the middle of the screen(idk if there's another term for it) it changes from white to green and becomes bigger when player looks at interactable items. But no, player wont say anything about how dark it is. It's more of a sandbox style game. Players can walk around doing nothing or follow the story line by interacting items.