Looking for someone to defeat me one time to get the Vengeful achievement. I have had just one slinger for over a month and have not been beaten at all. I have no idea how this is possible but Mr ZombiChickens facebook solution seems to be my only hope to finish this one.
"You'd need to be Facebook friends with one another. Go to the fight screen, and click the top right corner to bring up the "Tools" menu. Go to the "Friends" option here, and login to Facebook. Your Facebook friends playing this game will now show up as your allies. They can attack you from here (and vice versa obviously). Upon getting beat, you'll get the revenge option in HQ. From here, just follow MrZombieChicken's guide of holding back button on phone, and closing the window there to quit 10 times. Do note that this cost me 6 energy per attempt. "
I will gladly return the favor upon getting beaten but i will probably have to build my army back up a bit to do so.
You lack a vital quality found in all Sith. Sith have no fear, and I sense much fear in you."