Well, we saw that Mono is able to travel via televisions by tuning them.
That means that throughout the entire game, the Thin Man was simply trying to stop Mono from helping Six, as she eventually betrays him. We then see him slowly transforming, turning into the Thin Man that chased them and eventually imprisoned Six. The only option players have to progress the game from this point is to have him sit in the chair that is in the center of the room. Mono then falls into a pit of blood and guts. Instead of catching him and pulling him up, she lets him drop and be consumed when they’re escaping the transmission tower. The main ending most people will get for Little Nightmares 2 sees Mono being betrayed by Six right after he helps her transform back. If you have, or simply don’t care about spoilers, then continue. If you haven’t beat the game yet, or want to unlock the secret ending yourself, then stop reading. Warning: This guide spoils the ending and secret ending of Little Nightmares 2. While the game is pretty linear, many are wondering if there is more than one ending to the second installment in Tarsier Studios horror platformer? Here is everything you need to know about the ending(s) of Little Nightmares 2.
In Little Nightmares 2, it is up to Mono to guide Six throughout the Pale City, as the two must solve puzzles, traverse the environments, and defeat the deadly monsters that inhabit their world.