Here some comments about early units:

all your infantry is bad and you have no real cav. However you have some excentric unit types and there are three ways to win your battles:

1. applied psychology
Your units are made to freighten the enemy more than to fight it. With all your singing and screaming units, head hurlers and some chariots in their back the enemy sometimes is willing to route.

2. heavy chariots
they are undisiplined and hard to control. It takes time to turn them. They do not kill infantry as effective as other heavy cav, but they are very good against light cav. And they are beyond compare if you just want to break a frontline. So option 2 is to attack the flak or rear with heavy chariots, break the formation, make the enemy route and chase it with your inf.

3. a combination of 1 and 2