I overall enjoyed the game a lot - the gameplay and audio are great, and the enemy designs are fun.
But I'd love to see more polish in a lot of places:
Some graphics seem very low effort, like the explosions and the earth.
Some more feedback would be nice, like score numbers when enemies die, so I can understand the scoring system better.
Would be nice to have more control options for laser and bomb, maybe some keys. (I know AS2 doesn't support the other mouse buttons unfortunately)
Clicking the laser power ups was frustrating, the clickable area seems very strict. (If it's just a regular hitTest, you could put a transparent circle around it to expand the clickable area a bit)
Overall a cool game with some rough edges!