top-down strategy pvp medieval game around 2012 f2p on steam

[Nibraz]

I can't remember the name of this game, but it was a multiplayer only pvp game where each player controlled an army. It had 1v1 2v2 3v3 I think, also you could customise your army to have different types of units (each unit being composed of 30 men give or take) like an archer unit or a cavalry...
The game also had different races you could choose like dwarves, humans it even had centaurs as a unit I don't remember much else. It also had a clan system and a world map where clans fought for territory and got gems based on how much land they had to upgrade gear in your armies .

[Maska]

I quickly searched the Steam Store for F2P strategy games. If the game is not on that list, I'd drop the strategy tag off and go through the whole list of F2P games. I don't think there were that many in 2012.

At a glance, Stronghold Kingdoms seems to somewhat match your description.