I'm not going say 5/5 or well done because it is his first. TBH, it's not even good for a first game. The rating is on how good the game is and not how new the developer is, so rate it like you would another game... 1/5
This game is better than 95% of 'first' games that people make. You have done an extroadinary job and really know what makes a game tick. Bonus for bug free and nice little bits of physics.
NOT the best game on kongregate. How it got those ratings amazes me. There are so many games almost exactly the same or slightly different, some I'd consider better. Ohwell.