get some archers and keep running away from the titan after you attack... you can lead him around that way.... as far as how to kill him.... a titan of your own is about the only way to neutralize the damage.... otherwise you can usually kiss your town goodbye..... just keep pumping troops... dosn't really matter what kind since titans have 99% against hack, crush, piece etc (i think)... usually when i see the enemy building a titan gate i try to destroy it, and if thats not do-able i get to work on my own.... otherwise you can usually kiss your a** goodbye....