I had one particularly interesting dream that stands out from the zombie survival in that the antagonists were replaced with vaguely terrorist/pirate folk with laser weaponry. I had a couple of very useful devices thought up on the spot which I then found in my hands. It was impossible to have the terror-pirates caught in their various illegal activities because they had scattered tiny webcams across town, so they always saw the cops coming ahead of time and they either left or simply ceased their illegal activities so they couldn't be arrested. I was trying to cut down on the terror-pirate problem by removing the tiny webcams they had put into various hard-to-reach, hard-to-spot places. I got a vacuum-gun which sucked them up from the various places that I couldn't reach and destroyed them. They were still very hard to find, and I was wishing that the vacuum-gun had a way to track the webcams by radar, and then, so it did. I continued to track down all the webcams (they appeared to be everywhere, at a high density of dozens and dozens of them in a single square mile) while avoiding retaliation from pirates realizing I was destroying their stuff.
Sometime later I stumbled into the underground terror-pirate HQ, and was hidden for a while, when hundreds of them in a large group all became aware of me at once. Thousands of lasers began to streak across the large, cavernous underground hall towards me and time slowed down as I thought of what to do. I began to slide across the floor at an incredible speed, sliding on my shoes as if they were rollerskates. Where my sliding shoes touched the ground, they left a groove in the floor which a large grey segmented shield grew out of, sort of like the trail of light left by the cyclers in Tron, except of physical construction instead of an energy shield. The blasts directed towards me hit the shield, which consistently appeared where I was a moment before (and stayed there, forming a long snake's tail behind me), the laser blasts heading back towards the pirates creating a sea of energy and light to the side behind me.