How does your submission match the theme?
I implemented the "doing more with less" ideology by using only one button to interact with the whole world, aside from moving using the WASD keys. I also combined two general mechanics that seem to be simple on their own, but quite challenging when combined.

Third-party resources
I used the new Unity 2017.1. Everything is made by me except for the image effects in the camera (vignette and anti-aliasing), first-person controller, and the water prefabs; these are all standard assets from Unity. I also used Unity's navigation system for pathfinding, but I wrote the behavior system of the AI. I have a personal license for Unity.

For the art, I made it all using Blender3D.

For the sounds and music, I composed the background music, then, I used BFXR for the sound effects.

Contributors
My parents and my brothers for testing and for their honest feedbacks.