From what I recall, and Huns aren't really my thing, they used a lot of 'allied' Germanic tribesmen - either actual allies, or levies from conquered enemies. As such, given the general combat preferences of the Germanic tribes of the time, I'd guess that the bulk of close combat troops (both mounted and on foot) would be Germanics rather than Huns? As such, a large percentage of the force could be melee based, and armoured, but not nessecarily 'huns'.
I'd also suggest you check out the article on the Foundry website, which probably put things better than I have:
http://www.wargamesfoundry.com/ancients/huns