That's kinda fun!
I like the concept, the art is cute even if it could be improved and the core gameplay is neat.
I would recommend you to review the colors tho, the lil robot doesn't stand out of the background/ground.
I found very cool that you can stockpile items on the robot so you can deliver multiple things at once, that's nice.
Difficulty is increasing rapidly, and you're quickly becoming on the edge of failing for sure :D