If stealth is a focus of the hunter, he/she would be adept in the art of misdirection.
If brutality is a focus of the titan, he/she would be adept with large weapons, projectile or melee.
A warlock can be adept at focusing light into a beam.
If protection is a focus of the titan he/she would be as adept at protecting others with the same light they protect themselves.
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So you mean Blade Dancer, Striker, and Sunsinger?