I loved the old school arcade platformer gameplay. Great stuff. The character designs were all really cute and nicely animated. The title screen really nailed the style of those old games, with the attract mode that explained the object of the game etc. nice touch. It'd be nice to have some score pop-ups, a lot of games of that era had that feature and it would make collecting the b-bots feel more rewarding.
Excellent work for a first project, there was only really one bug I encountered where on level 2 I was able to move into the wall off the side of the screen--didn't get in the way of my enjoyment though.
To answer your feedback questions from the Itch page: Yes, the game is lots of fun. Level 1 could maybe be simpler, maybe miss out the conveyer belts or the jump pads and save them for the level 2 so there isn't as much for a new player to take in at the start. Difficulty wise, the old games are usually pretty hard so I was expecting to die quite a lot, the first level could maybe be a bit easier, maybe fewer enemies to ease the player in.
Overall, I really liked the game and it's a great first Pico-8 game, especially considering you were making it to a deadline. Great work :)