Have a question too: Playing around on the attic room i found something strange.
http://dehacked.2y.net/microstorage.php/info/785911191/Stuff2.smv
The floating creature has 250 health points and the wave + spazer shot only inflicts 70 health points damage. In the smv, if you use the last script P.J. posted you'll see that the beam goes through the creature damaging it 4 times in a row (280 health points), so the enemy is killed and the beam doesn't desapear. I'm not sure if this can be done in other areas of the game, but in this particular room i've noticed it happens when the creature is close to the spark of the hub, when using the script i mentioned there's a box where you read "80/80" and something like a life bar and when the creature is close this happens.
Does anyone know why this happens and if can be used against any creature in any room?