It's use is pretty easy to understand. Simply Mark (Marked for Death) a target, Vault up to that target to stun, then channel them with Rapid Fire. Keep in mind that Rapid Fire gets a 40% damage boost due to the passive "Cull of the Weak " in conjunction with "Marked for Death".
Once Hatred is depleted, use Evasive Fire to quickly get away, and Entangling Shot to keep them away.
Entangling Shot (Crimson) was added to ensure a constant 40% damage boost. Alternate between this, and Evasive Fire to build hatred while simultaneously being defensive and keeping the enemy players at bay (snared).
Preparation (Golden Rune) was added as a panic button that heals and relishes resources. The drawback is the massive 120 second cool down....but pfff...got a better idea?