Chainsaw and how to use it

Answer from: mr. naraja
I was hoping you would tell me... It seems to work by just tapping the screen rapidly, like the first pistol, but it also seems to have a delayed reaction, like the shotgun (which I never use for that reason). I tried swiping the screen, but that had no effect. I'll keep tapping (or more likely just go back to the vastly superior IMHO rifle) until I get to the minigun. Good luck!

Answer from: newimac
The chainsaw is a closer range weapon, and is only effective about halfway to the truck and closer distances. I experimented and found it to be pretty effective by tapping the screen just below the zombies head, and alternating the tapping on the left then the right in one second intervals back and forth whichever side the zombies are closer (You will hear a popping sound when you're doing it right). When you get close to the end of the battle and the zombies are only coming from one side continue the one second interval tapping (tapping quickly does not work). Try the medium setting till you get the hang of it, then switch to the hard setting. I am able to keep 100% health on the hard setting on most runs. I hope this helps.