Turians lack the brutality of the krogan, the skill of the asari, and the virtuosity of the humans, but the general populace adheres to a strict moral code and the turian military is renowned for its formidable discipline.
Even if their entire line collapses, they fall back in order, setting ambushes as they go. A popular saying holds: “You will only see a turian’s back once he’s dead.”
Turians share the Sentinel and Soldier classes with the krogan, but outside of their shared inability to dodge or sidestep to safety, they play very differently.
Turians do not possess the raw melee prowess the krogan are born with but can still wade into the thick of things with their naturally higher shield ratings and expect to last a little longer than most other races.
As Sentinels their shield capacity, combined with active Tech Armor, allows them to stay in optimal range for shotguns, stripping away shields with Overload, cracking through armor with Warp, and detonating their Tech Armor if the enemy gets within melee range.
Turian Soldiers are excellent ranged combatants; the Marksman power allows them to make the best use of assault rifles or semiautomatic sniper rifles, with Concussive Shot and Proximity Mines allowing them to play a very painful game of keep-away with any hostiles.
The right boosts in Fitness can keep a Soldier in the game even under considerable pressure, in spite of lacking Tech Armor.
Turians are the best race in the game with Assault Rifles, enjoying a natural bonus to their stability.
Their turian Veteran passive ability can reduce the weight of these weapons, allowing them to carry the heaviest ARs with a lighter penalty to their power cooldowns.
As such, turians are at their best at midrange, close enough for powerful and accurate fire, remaining just out of reach from enemies with instant-kill abilities.