I mean, I was never able to use them for anything, they are good for killing infantry, but Lurkers are better. They can't beat reavers or siege tanks. I mean what exactly is their purpose? I mean they can slaughter marines and Firebats, but what about tanks man. They can't fight air, they are late game, they cost a butt load, they are melee, they have no splash. On the positive side, they are quick with upgrade, and have extremly high armor, not to mention they can dish out damage at the same rate as a non stimpacked marine, not to mention a butt load of hp. Does anyone here use ultralisks and if so give me some advice on how to use these giant mofos.