Gameplay: Great, but you could as well have made the two robots controllable with different keys − e. g. one robot with the arrow keys and the other one with WASD. That would also enable two people to play together. I found it really aggravating that you die when one robot reaches the goal while the other is too far away − why not simply show a message and move the offending robot back a bit?
Creativity: As far as the idea goes, really creative.
Graphics, Sound and Polish: The robots look quite cute, but the surroundings are really boring. Adding some background music would have been nice, too (although I mostly play on mute). The blue box around the level looks weird. I don't speak Polish so I ignore that point 😉.
Interpretation of Theme and Completeness of Game: I like the game; you could add a win screen in the end, but apart from that, I consider it rather complete. I especially like your interpretation of the "together" theme.