Turian Saboteur Engineer

Turians adhere to a strict moral code: "The needs of the group outweigh that of the individual." Discipline is the foundation of turian society. A turian line never collapses; its troops fall back in order, setting ambushes as they go. You will only see a turian's back when they're dead.

Turians receive the best military training in the galaxy. Their proficiency with a wide range of weapons, as well as their unmatched focus and determination, make up for their lack of speed and agility. They are a redoubtable ally on any battlefield.

General Notes

 * With only Homing Grenade being the power capable of inflicting reliable direct damage (as well being limited), the Turian Saboteur relies mostly on defensive tactics and weapon damage. Because of that, he doesn't suffer much carrying heavier weaponry since his other two powers are more situational.
 * However, being equipped with propulsion packs, the Saboteur has a lot of mobility, able to effectively switch between camping points.
 * Since the Saboteur lacks powers to deal with shields, anti-shield weapons (such as the Acolyte) and/or ammo equipment are advised.
 * The Saboteur's heavy melee attack actually deals Tech damage. Coupled with the melee's decent range, combining it with Sabotage's Tech Vulnerability upgrade can kill Centurions and Marauders in one shot.

Cerberus

 * All enemies can be affected by Sabotage's overheating, and additionally Turrets and Atlases can be hacked.
 * Sentry Turret, specially if evolved with the Flamethrower, can delay the charges of groups with Phantoms and Dragoons.

Collectors

 * Sentry Turret is useful as it can delay the movement of Abominations, being especially useful when they're possessed.
 * Sabotage is less useful, since only Troopers and Captains can be affected.

Geth

 * The Saboteur has advantage over the geth. Being equipped with Sabotage and Sentry Turret, he can quickly dispose of dangerous enemies like Geth Bombers and Geth Hunters before they pose a threat to the squad, while Homing Grenade can deal with Geth Pyros and Geth Primes with high efficiency.
 * All enemies but Geth Troopers are protected by shields, so the Acolyte is recommended.

Reapers

 * Sentry Turret is useful as it can delay and dispose of groups with weaker enemies, such as Swarmers, Husks and Cannibals.
 * Sabotage is less useful, since only Cannibals and Marauders can be affected.