Darius vs Locke

Aim the outer edge of Decimate (Q): only the blade heals you and applies Hemorrhage (passive). The handle, in the center, deals less damage.

Go all-in when your target has five Hemorrhage (passive) stacks: you gain a massive AD bonus, and Noxian Guillotine (R) hits harder with each stack.

Save Apprehend (E) to pull back an enemy who retreats, not to start a trade: it's your only pull, on a 26 to 16 second cooldown.

Cast Noxian Guillotine (R) on the lowest-health target: its true damage ignores armor, and if it kills, you can recast it right away.

Back instead of staying in lane at low health: Silver Stake (passive) adds damage to his autos that grows with your missing health.

Trade after Ashen Pursuit (E): it's his only instant movement, and its 10-second cooldown only resets if he gets a takedown.

During Soul Ignition (W), only hit him if you can kill him: at the end, he heals back part of the last damage taken, yours included.

Marked by Purgatory (R), stay above its threshold: if you have a heal or a shield, use it, because he seals marked enemies who drop below it.

If the Purgatory (R) artifact lands, hold the area where it fell: by picking it up, Locke raises his execute threshold for each sealed champion, for the rest of the game.