I think that this is a cool concept, but there are some frustrating elements of the current state.
- starts off really hard - needs a difficulty ramp
- it would be easy to make both hands perform all functions
- many times destroying the enemies does not spawn a brick
- many times, bricks fall into the abyss - make them gravitate onto the platform please!
I think these points, a scoreboard, and a little more polish would make this a simple but saleable game.