So while I was just chilling around on the forum, I was fooling around with my character in 3rd person and noticed a cool animation for a swing I've never seen before... So I begun to play around with different directions, and turns out power attacks are different depending on where your left joystick in facing.
Up (Only one I thought existed) = Lunging Attack
Down = Overhead Swing
Left = 180 Frontal Sweep
Right = 360 Full Sweep

I feel like the biggest noob considering I've been playing since the game came out hahahaha
Someone please tell me I'm not the only person ignorant on this knowledge....