My device lags if playing too graphical-based games, while I could let you know my opinion by watching youtube's lets-plays and viewing screenshots:
The tree with leaves do look realistic, I like the fading greenish-colour there & about the trailer-video ...I'd think the acoustic fits best when "unity" gets fade-in, while adding a sound if text appears, sounds cool just the chosen one don't fit perfectly (especially if the game's title getting fade in, it's a short sound for e.g. a smooth visual, maybe the acoustic-effect could be similar in duration also quite different in sound)?
Rain sounds realistic, same for the visuals e.g. that gate. I'd prefer less cutscenes, at least letting them appear more smooth than: video. black. video. black.
Inside that room I like when that bottle getting zoomed, looks awesome in graphics. Same for the environment, also the candle's flames (maybe some bits of "smoke" in black could fadeout on its top or something like that, to add more "motion"? Or optionally close to the source, there could be a shiny bit, etc.)
When those beds move, I like the audio and visuals ...sounds interesting when getting to that spot. Also when that audio stops and "itch"-text appears, that "bling"-acoustic fits. maybe bit too noisy in stops between both vocals, still nice as effect. Looks quite like a movie's trailer, in reference to graphics and scenes of that movie? I'd suggest using the "who created it" on the end of the video & maybe a clickable hint directly on youtube or in it's description?
Maybe additionally channels getting mentioned on itch's game-page, that refer to this game e.g. social-media platforms if user's would like to get in contact, pm'ing suggestions, etc.?
