Early Game Buy left to right. If you lower the Bullet Resistance of the enemy, it means you'll deal more Melee Damage to them! If you feel like you'll parry a lot, get Rebuttal in the Parrying section! Upon acquiring Express Shot, use your Alt-Fire (RMB) to deal big damage! Just remember to wait 3s between shots to get its effect! Use it after a Heavy Melee!
Lane Extras Buy one of those items to remain in lane and not miss out on souls! Sell the item you picked later. Melee Lifesteal works with Puddle Punch (3). Extra Regen is the most passive option. Resto Locket will allow you to regain 2 stamina upon use!
Mid Game Buy left to right. Use a mix of Melee, Alt-Fire and Puddle Punch (3) to deal damage, heal and debuff your enemies! Once you get Phantom Strike, you'll be able to burst down your enemies! If you are able to time parries well, grab Counterspell as it'll make you able to parry many ultimate abilities!