Interesting concept, bad execution
It's a nice little game, but there are some points that need to be improved.
1. Why do you permit only one "Pause" by game ? I don't see how somebody could cheat by using the pause.
2. Music. The loop is kind of short, and sounds really bad. Use a better music - try NG Audio Portal for free music.
3. Sounds. Lacks sound effects.
4. The 3 "ennemies" come too soon in the game, and the difficulty gets higher too fast.