Wow, for a 1 week 3D game demo, this looks great! The steampunk artstyle looks nice and consistent in both the environment and robot characters. I appreciate the careful attention to the level lighting with the tone variety and placement so it's not too dark.
The puzzles were simple but easy to grasp, and help link to the theme where every robot is important. However, I need to mention I experienced a glitch where my robot clipped through the floor and was stuck in an endless void. I had to restart from the beginning.
Despite that one glitch, it's a very-well made demo. Congrats to the dev team!