Good Effort
It's very good already to know how to create the codes for the game. It's a good start up. Ignore those who do not know anything about creating of flash. They are just senseless critiques with no knowledge of help to make one and kept complaining. Anyway how about inserting some music and more sounds to it. And also make the enemies chase you too! I'm giving you a 7/10 for a start. Good luck! =)