Simple but effective little party game you have here. My fiance and I had a lot of fun playing this.
Having no pause menu meant I had to alt+f4 to close the game and re open it to get back to the menu though. Nice simple background for the menu, but a suggestion I could give for this would be to maybe include the tutorial in the menu. Even just having the two player cars have movement and punching. With window looping (pac man style) and collision on the buttons and settings menu. Gives a unique interactive element to your Menu and prevents the player from missing the tutorial as it was easy over looked being at the bottom of the level list.
Suggestion 2 would be not to include two of the same builds of your game in the download folder. box "box 'n' race.exe" & "HOoo boy!!.exe" are the same game. mabe remove the hooo boy one in future.
My only other suggestion for now is to update the game page here on itch. I'll be honest I immediately got a bad impression from a blank page. However was of course very pleasantly surprised when I loaded the game up.
Overall really good fun, I look forward to more if you continue development