Genji's rightclick is horseshit powerful in close range. It'll do 90 damage if it's a body shot, 180 for a headshot, can be cancelled with a melee for another 30 damage, which can be cancelled in turn by a dash for another 50 damage.
Also, learn to read the enemy's tempo. You can usually activate reflect right as they start firing if you know their weapon fire rate and if they reloaded recently. Throws people off hardcore.
When you get your weeb stick you can just throw all your fucks out the window.