Types:

Primary (4d best)
back up (3d best)
melee (weakest type)
special (2d best)
sniper (best type)
heavy (also 2d best)
this are the types, with the types you can do differnt attacks, snipers are waiting for attacks wile primary's go for the victory, back-ups are good assasains while heavy's are strong and specials have special abillity's melee's are good with swords etc., but it also depends on your level because a level 1 sniper cant win from level 10 melee and it also depends on age and main strength