Really great entry. I did have a couple gripes (but they aren't too major):
1) The game felt a little too repetitive for me. Obviously, that's half the point of the game, but I think if you found a way to add some sort of like NPC or quest line or just something to break up the digging a little bit that would've been nice (and could be something to consider for the future). Basically, if you could find a way to add a greater sense of purpose to the digging somehow I think it'd add a lot.
2) There wasn't a way to see how full your inventory is. Having a bar somewhere on the screen would be pretty easy to implement and also add a lot to the game in my opinion.
Other than that though, this game was honestly super impressive. I was blown away by the overall aesthetic of the game; I actually felt like I had driven to a trail in the middle of nowhere and was operating out of a truck. The fact that I was able to feel like a part of the world without having any sort of story text whatsoever is super impressive, so really well done on that. You guys also had above and beyond levels of polish (like the settings menu). Really great job guys!