Story - Mysterious and lovely! I really enjoyed exploring the world with a random buddy that happened to be wandering around when I logged it. It definitely gave me Journey vibes. I wish there was a simple way to communicated with the other player! A small chirp or some kind of vocal indicator that I could use to signal my buddy to something I discover.
Mechanics - Took me a hot second to figure out that I had to use F and THEN my mouse would be unlocked and able to interact with the world. I think just making a simple interact trigger would be much more intuitive for players. My buddy and I spent a good 15 minutes wandering around the apple area trying to figure out how to pick up the apples lol.
Theme - I didn't get a whole lot of generosity from it. Most of the time it felt like solving puzzles so we could advance deeper into the temple. But it was fun to do it with a friend!
Audio/Visual - That model was super cool and unique! I also really dug the music. Great job!
Overall - Definitely more fun with a friend, as you mentioned. I was lucky enough to encounter someone randomly and together we puzzled our way through. It was a really great experience being able to share the joys and frustrations with someone. Awesome job!