The Roman costume pieces are unlocked by completing the Imperious TF in Cimerora; a level 35-50 task force.
It's one of the most popular TF's in the game now... in order to access the zone it happens in you'll need to do the Midnighter's arc in Steel Canyon given by Montague Castalelo (sp?) in the University building. You'll need to be level 35+ in order to get into Cimerora once you've completed the Midnighter arc.
COH has just been murdered by NCSoft. http://www.change.org/petitions/ncso...city-of-heroes
There is also a Valkery helmet which is similar, but more cartoony. You can buy that pack in the store for $10 and it also comes with an additional gimmie power, like mission door teleport, etc.
Finishing ITF gets you the entire Roman outfit which has some great chest details that cover the entire torso. Great for layering in winter.
For further reading:
paragonwiki.com/wiki/Unlockable_Costume_Pieces#Roman_Costume_Set
http://paragonwiki.com/wiki/Imperious_Task_Force
http://paragonwiki.com/wiki/Cimerora
http://paragonwiki.com/wiki/Midnighter_Club
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How do i get the roman helmet costume piece? I have seen it and it looks cool.