Great story!
I like the visual fx of wind when you are running, also the ruins look great from the ground but too repetitive. It is even worse in the platformer section, when you are above. Moving player above the ground is a great opportunity to show him a nice and big picture of the level from unusual angle, but in your game it looks a little bit dull. The bigger variety of structures with several unique buildings would be great. So, I advise you to work more on the environment. It's also a good way to tell some lore of the game.
For the platformer section, it would be nice to make controls tighter, maybe add some coyote time. And it is also a bit repetetive with just simple stationary platforms of different sizes.
Running from the tornado section is too long and doesn't feel like you are running from the tornado. Consider more visual effects of sand and destroying structures by the wind
But anyways, considering that it is a game jam, there was not a lot of time to do all that stuff, so you did a good job! The robot looks cute :)