I liked it, especially the transitions between block placements and it was fun, but it was lacking some overally polish. Here are a few things I noticed
The platformer movement is stiff
You don't know when lasers will come out of the wall so being near them is dangerous(maybe add a ! warning that appears a few seconds before the laser)
Lots of times the lasers would be approaching you one on top of the other at the same time, meaning you were damned if you jumped, damned if you didn't.
The thing with starting on level 4, which you addressed in the description
I wish there was more to do with the robot theme. It feels like you could have totally replaced all the robot-thematic elements easily. For example, you could have replaced the battery with a hunger/health meter and the electricty with food. I think the robot idea was not a bad one, but I think you could've gone farther with it.
Considering this was a game jam game and you had very limited time, none of these things are dealbreakers, but I think most of these polish ideas probably should have come before the cool level transitions. Nonetheless, it was fun and that's what matters