You came all the way from your homeworld to earth in order to kill the president of earth. But as you command your crew to bomb the head quarters, they tell you that they forgot to resupply the bombs.
So you get only one.
Luckily, there is a lot of explosive stuff in the area, so maybe ne bomb is really all you need, if you can start a chain reaction.
Note: If you don't get sound on Linux, check your OpenAL configuration (/etc/openal on Debian).
There is a post-compo version available now, which fixes the two most pressing problems.
Please don't hesitate to report any additional problems you find.