With skills that can be upgraded infinitely, if I'm invincible, who is?

[A game where everyone travels through time + archers + god-like talent + decisive killing]
The mysterious game "Immortality" has arrived. In order to survive, everyone must level up frantically and improve their strength.
Su Yu awakened a god-level talent right from the start: Infinite Growth!
[Level 1 Unlimited Growth (Godlike)]
[Effect 1: All your skills can exceed their level cap.]
[Effect 2: You gain 1 skill point for each monster you kill that is at least your own level.]
From then on, Su Yu frantically learned all sorts of skills and leveled up endlessly.
[Level 9999 Basic Archery]
【lv9999 Soul-Severing Arrow】
【Lv9999 Powerful Arrow】
[lv9999 Powerful Strike Aura]
【lv9999 Glorious Halo】
……
Years later, Su Yu finally discovered the mastermind behind the "Immortality" game.
"Don't be afraid, I'll only shoot one arrow!" Su Yu grinned.
The next instant, the mastermind behind the "Immortality" game vanished into nothingness, disappearing completely into the eternal river of time.