Nice work! I think the dithering shader helped sell and enhance the atmosphere of the environment and the music & art all seemed like it was pointed in a cohesive direction. The shift in music and tone was a bit jarring and I feel like there couldve been more done to ease the transition, though the abrupt nature may have been the intention.
Also there is a bug that made me miss a fair bit of dialogue. New dialogue lays over the old dialogue when a trigger is reached.