The firebeam is a dark fire weapon that fires probably well beyond the speed of light. It is also silent. The fact that it is a dark weapon means that it destroys every small ship with one shot, but because of how fast it fires, it is very difficult to aim. So it almost balences.
The other weapon is the RPG. This is a high momentum weapon. It fires two rockets that do blast damage.
The RPG isn't what I originaly wanted it to be.

Anyhow, here is the link to Xelerus:
http://xelerus.de/index.php?s=mod&id=87