Deja Vu manages to do quite a bit with the few resources that it uses.
While the game consists of mostly re-used assets that have been recolored, it still maintains a pretty clear tone and atmosphere throughout which is reinforced by the music pretty well. Not many sound effects, but it didn't really hinder my experience. Very clear sense of progression, unlocking new directions the farther in the game you get. The controls felt a bit floaty, but this was overshadowed by the aforementioned mechanic of unlocking directions. I don't fully understand how it uses the limitation, but nevertheless I enjoyed my time playing.
It's also my first time doing a Game Jam (as a matter of fact this was also my first time making a game in Unity), and I wish you the best of luck with future projects!