Raptors are fast and have a variety of attacks. They'll make liberal use of their turrets if you get too far away so you'll need to alternate between attacking and Ninja Run to deflect bullets. They also have an electrical Pulse attack that they can execute that will stun you and deal damage if you are caught in the rather large radius. Aside from these attacks, they've got a variety of melee attacks consisting of both close range kicks and long range lunges.
Most of the attacks can be parried except for the pulse attack so get in there and start hacking away. As you fight and cause damage, you'll be able to cut off their legs but it's important to remember that this won't kill them. They are still quite capable of attacking while on the ground but this will still limit their effectiveness drastically.
