At first I was a bit confused on where to go but the balloon pulling you was a nice touch for guiding the player. The controls were a bit wonky to figure out at first, didn't expect car-esque controls on WASD but isn't too hard to get used to after a bit. The story could definitely use some work I think and maybe add some more environmental storytelling instead of dialogue (though I know that's a lot of work).
Had to compile it myself for macos (probably because apple's security stuff is stupid), but ran well for me even with just `cargo run`.
Good job :)