Have you ever wanted to feel like an anime character zipping around the battlefield with a sword twice your size? Have you ever wanted to just have the rouge's amazing expertise feature while still brandishing a great axe? Or perhaps charge up a powerful strike to unleash devastating blows on your opponents? Now you can through the combination this subclass provides with the speed of a rouge and strength of a martial class.

Greater Sneak Attack

You realize that the best way to kill someone is not to do it discreetly and stealthy, but to kill them to the point that the is nothing left, after all, stealth doesn't matter when everyone is dead.  You can now use great/heavy weapons along with your sneak attack without facing negatives or drawbacks.

Uncanny Speed

Your able to move so fast that each strike feels as if it hits harder. Your speed also becomes more uncanny the more powerful you become. You can now add half of your dexterity modifier (rounded down) to weapon attacks and damage with great/heavy weapons. You also gain an additional 10 feet of movement at 3rd, 9th, 13th, and 17th level.

Killing Blow

Once per long rest you can spend an action or actions charging up for a powerful strike, for each action spent charging up, you add an additional dice of your weapon. While charging you can't move or make reactions, enemies will have advantage while attacking you, but you are able to stay stealthed and make stealth checks. The attack hits in a cone in front of you (Like and upside down pyramid with the tip being closest to you and it extends 3 spaces with a width of 3 spaces). At 13th level when you decide to release the attack you are also able to move your base movement in a straight line hitting everything to the sides of you.

Dashing Strike

After moving your base movement you gain advantage on your next attack once per turn. Additionally, when you kill an enemy  you can attack a another enemy in range but without any additional damage modifiers unless the modifier is tide to the weapon. At 17th level you can add damage modifiers to the second attack.

Adept Speed

When you roll a critical hit for damage, the movement you used that round is reset along with your use of dashing strike. Additionally, once per long rest all movement used during combat divided by 10 can be used to add to damage. Ex: Moves 60 feet, add 6 damage to next attack.