i am a great fan of the total war series of games and in the attila version the huns are show with asian traces almost like mongols guns and clothes to, when in school i dont remember beeing taught that way. also what happed to the huns after the death of atilla? why they simply vanish?
It's a bit of a contentious issue. Eastern Europe was a bit of a mess in that time (the early 5th century), with various ethnicities, tribes, or empires appearing and disappearing over the decades. The most reasonable approach is to see the Hunnic empire of Atilla as a sort of union of different peoples, all collected under the 'brand' of the Hunnic name. There probably was a 'core' of pre-existing Hunnic identity, which, as their reputation grew, attracted an increasingly broad group of followers. It is entirely possible that many of these, including the 'core' ancestral Hunnic group of the 4th century, were of Asiatic descent with the associated look as well. Given that the Huns first appear in the historical record in association (and of lesser status to) the very Asian (Iranian) Alans, it is quite likely they adopted some of their physical appearance as well. But by the early 5th century they had been living in Eastern Europe, and in association with the previously dominant (and Germanic) Gothic people, for several centuries.
As for their disappearance, the Huns follow a century-old pattern of 'empires' in Eastern Europe. After Attila's death, the 'franchise' lost its appeal and fractured into a number of distinct political units, many adopting their own distinct name, some continuing names that were previously operating under the Hunnic umbrella and some forming entirely new groups. At least one of these groups continued using the Hunnic label for some time, Eastern and Central Europe experienced somewhat of a power vacuum with no dominant power replacing the Huns until the appearance of the Avars in the 6th century. In this power vacuum there did occur the rise of the Slavic name, the spread of which seems to have been punctuated, but not stopped entirely, by the Avars.
The starting point for Hunnic research would be Thompson's work, such as his 1948 A History of Attila and the Huns, but to properly understand eastern Europe of the time it is essential to also include modern archaeological, linguistic, and genetic work, such as Heather's The Goths (who supports the Huns as a Turkic group) or Florin Curta's work on ethnogenesis of the Slavic peoples.
sorry for the bad english i am not a natural speaker.