It could have a thief type class, with the evolution from rank to reaper and assassin and others ranks.
Using weapons like: Twin Dagger, Chains, Scythe …
http://bumped.org/psublog/wp-content/uploads/2009/12/kanshou-and-bakuya.jpg
For the type of Daggers, he is focusing on critical damage skills, exploration of target weakness, few targets, but average damage, high critical rate. With target trap skills in chains, join the targets with a series of attacks.
Point-Weak: Low defense, Low hp, few targets.
Point Strength: Low Cooldown, Various Attacks and Sequences, High Mobility, High Critical Damage through Passive.

