Well, there is usually 2 choices when it comes to lineup build either go full offensive and try to kill as much ninjas as possible as fast as possible OR play full defensive and try to keep your ninjas alive as much and as longer as possible while killing enemy slowly but surely, anything that comes in between (balanced offense and defense) is not optimal simply because you either don't have enough defensive capabilities to take on the offensive ones or not enough "juice" to bring down the defensive ones.