Las gun works fines as well. Add a battery pack and there is some fun for the whole family. The long shooting time really annoys buggs.
As far as lucies go, I see it as a mostly defensive weapon due to the speed. What I love doing is running with the luci fire.
Let's say you have a long corridor. Fire a big one and a small one and run with it then fire another big one and small one. Now you have a nasty wall of luci death surrounding you. Should anything pop up, it won't even know what hit it, regardles of its size.