Which factions and troop types are present in the game?

Factions:
The Order: Pikemen, Arbalester, Knights;
The Barbarians: Berserkers, Valkyries, Giants;
The Mages: Phantoms, Pyromancers, Nightmare.

Troop Types:
Infantry: Pikemen, Berserkers, and Phantoms;
Shooters: Arbalester, Pyromancers, and Giants;
Cavalry: Knights, Valkyries, and Horrors.