Miss Fortune vs Aphelios

Fire Double Up (Q) at a dying minion in front of a champion: if the shot kills the minion, the bounce onto the champion always crits.

Switch targets often: Love Tap (passive) adds damage on each new target, and lowers the cooldown of Strut (W).

Activate Strut (W) to get in position before Bullet Time (R): you instantly gain its max move speed bonus, plus attack speed.

Cast Bullet Time (R) on enemies who are CC'd or bunched up in a chokepoint: it's a channeled cone, and each wave can crit.

Back off when he holds Gravitum and has slowed you: Weapon Abilities (Q) with the cannon roots every enemy that weapon has slowed.

If you can engage, go for him when his support drifts away: his kit has no dash, and only Severum makes him run faster.

Spread out from your allies when he has Moonlight Vigil (R): the blast explodes on the first champion hit, damages those nearby, then he attacks each of them.

When he deploys the Crescendum sentry with Weapon Abilities (Q), leave its area: it attacks you with his off-hand weapon.