I know it wasn't intended to be played like this but I had to split my brain into two to control both robots simultaneously and it was extremely challenging but also extremely fun. I probably can't speak for everybody because I played through by myself but I feel like the timer is a tad bit too short. Maybe 15-20 seconds would be better especiall for the levels where some crates are placed out of the way. Anyways it was pretty fun and actually a creative idea that I haven't seen yet in the jam.
I would recommend updating the description of the submission page if you can with a short description of the control scheme because I had to figure it out on my own and it was especially hard to figure out that s and the down arrow pick up the box. I pressed it accidentally on numerous occasions and thought the boxes were glitching out and disappearing and reappearing randomly!