Trap assassins, aka Trassassins or Trapsins, use traps to deal damage to their opponents. The more common trapsin would be the lightning trapsin, as lightning traps have the potential to deal the most damage. A lightning trapsin's skill tree should be focussed in traps and only lightly in shadow disciplines, only to acquire the skills Burst of Speed, Mind Blast, Fade and Shadow Warrior or Shadow Master, depending on your preference (Shadow Master is more of a tank). The stat points should mainly be in vitality, with only enough in strength and dexterity to wield your armour and weapons.