I just finished most of an early Achaemenid army for DBA (I/60c). It is "most of" because the army pack was short a few elements (Ax, 2Ps and Hd) so I am waiting for Gord from Sentrybox to send me some blisters to fill in the missing guys.
The army consists of 2 sparabara (8Bw)
Up to 2 Immortals (4Bw):
Or up to 2 4Ax
Another bow (3Bw) and a light horse (2LH):
And 2 cavalry (general)
This is definitely a bad-going oriented army, the 3 mounted elements give it some mobility for flanking, but it will need lots of terrain to have any success, especially against Mark's Kushites or Greeks. Unfortunately it is Agg 3 so will often fight in the opponents terrain choice. At least it is designed to kill elephants though.
I like the way it looks, but I think it will lose more often than it wins.