Adepts are biotic specialists. They start out equipped with pistols and light armor. Their upgradeable implants give them biotic powers. The powers can be used to lift or throw objects, shield the party, and disable or destroy enemies.
Using the holographic OmniTool, they can heal their party, disrupt enemy weapons or shields, decrypt security systems, and repair or modify technical equipment. They can unlock the ability to reverse enemy engineer technology and wear light armor.
Infiltrators specialize in killing or disabling enemies at long range. They are trained to use OmniTools, but focus on decryption and offensive abilities. They can learn to wear medium armor and train with pistols or sniper rifles.
Sentinels use biotic abilities and advanced healing skills to defend allies. They can only use light armor and can not receive advanced weapon training.
Soldiers start out with pistol and assault rifle training and medium combat armor. They can unlock assault training, shotgun/sniper skills, heavy combat armor, and perform first aid.
Vanguards specialize in close range attack. They train with pistols and shotsguns, and can wear medium armor.