Aphelios vs Aurelion Sol

With Gravitum as your main weapon, hit your target to slow them, then cast Weapon Abilities (Q): the cannon roots every enemy it has slowed.

Switch to the right weapon with Phase (W) before Moonlight Vigil (R): you then attack each champion hit with your main weapon, and its effect applies.

Before an objective, check Weapon Queue System (E): it shows the weapon Alune will give you next, and an empty weapon goes to the back of the queue.

Stay behind your minions: Breath of Light (Q) hits the first enemy in its path, and only the seconds spent on a champion give him Stardust.

Play hard early and don't let the game drag on: with Cosmic Creator (passive), each of Aurelion Sol's abilities grows permanently stronger through Stardust.

Leave Singularity (E) quickly: it pulls you toward its center, where it executes enemies below a health threshold, and each second inside gives him Stardust.