This is actually pretty good for a first flash game made in your spare time during class. This can be expanded out into a full game, take a look at "This is the Only Level" and you'll see that you can make a fun game with only one level but different gameplay mechanics each time you go through.
Pretty good side scroller, sometimes I would blow up when I killed an enemy even though I did not get hit by anything. Also, there's never a reason to not shoot so why do I need to hold down my mouse button? Just make the ship fire non-stop.
I really like this game because of the checkpoints, you don't punish the player because they are bad at video games. It's nice that if I mess up I don't have to go back 10 screens, at most it's past the last obstacle of the last screen.
You need to get to 15,000 feet to beat the game. Instead of holding down the rocket button, just tap it and you'll lose less fuel while still going higher.
Very bad, these types of point and click games stopped being made because they required clicking on everything in sight because there is no logic behind anything in the game.