I love the aesthetic. You were spot on with the 80s style, it reminds me of the Stranger Things game. Full marks for theme! The graphics+audio style is consistent, simple and on point.
To give some constructive feedback I'd say that I kind of wish I could move faster. I know it's "turn" based, but maybe leaving an arrow key pressed could mean that moving to the next tile takes a bit less time.
I think this would be worth polishing, expanding on and releasing. It may work well on mobile or web. Brilliant job!