I gave my robot balloons and it lifted us up a cliff. However, then I accidentally fell off a cliff and my robot stayed there.
I needed to create a new robot, but I didn't want to give it arms or legs. I just wanted a new robot to take me up to the first one. However, the new robot refused to inflate balloons due to the lack of legs.
In the end, when I climbed the cliff, I saw my first robot falling off the cliff. And then I fell off the cliff again, leaving the second robot on top of the mountain. Unfortunately, I didn't make any saves during the game.