Nice job. I liked the balance between managing water intake and the weight/speed of the robot.
The imperium needs water for the homeworld, you "bob" have been sent to the lush planet "H to O" to collect as much as robotically possible.
You control your robot sorta like a plane/helicopter, collect enough water from water pools and clouds. Maybe the planet "H to O" will die from this, but who cares? Kappa