Hey, good job on making a jam game.
few thoughts and pointers:
i felt like the 2 players could interact in more interesting ways, a majority of the puzzles felt like "player 1 needs to go to the middle and player 2 needs to go to the middle."
i think having the logic be more like "player 1 needs to get to x so that player 2 gets to y but quickly because player 1 needs to get to z " etc. would be more engaging.
also, i noticed you have a nice cityscape/factory background, what could add a lot of life to the environment is simply adding a bit of parallax scrolling to the background.