You don't have to switch, but the lower robot has reduced gravity to make it more forgiving - some more challenging platforming was planned for levels that never made it
So fun - love the idea and the execution. Annoying to try get that last achievement, and a few bugs with physics and eyes popping in, but overall a great time playing. Amazing work for a jam!!
Appreciate the feedback - we'd hoped the discovery of controls would be part of the fun with the hints around the levels, but can see how it might be frustrating so have added to the page.
(P.S. you can reset with backspace - hinted at in level 1)