Algodoo

Up arrow key to initiate launch (hold it down for 2 seconds or so)
Left and right arrow keys to fire stage 2 boosters

Notes:
Firing the state 2 rockets in stage 1 can help you aim

Turning stage 2 too quickly will detonate the pressure sensitive warhead mid-air. This is usually bad, but it can actually be more devastating than a direct hit when timed properly.

With a bit of luck, a well placed warhead can potentially clear every brick off of the screen