How to get Gyorunton, Easiest Method

This is the easiest way to obtain the secret character Gyorunton.

Character selection: Leda

Leda can be unlocked by: Travelling downward in Gallo Tower, until the screen starts to turn black. You'll find Leda among the usual mobs, keep your eyes peeled it's easy to run past him.
Simply defeat Leda here and it will unlock the character.

Arcana Selection: Game Killer

This Arcana can be unlocked by: Defeating the final boss of Cappella Magna.

This Arcana blocks the ability to level up the character and turns XP gems into guided missiles that explode on impact.

Level Selection: Boss Rash

This level unlocks by: unlocking Hyper Mode for all 5 normal stages

Methodology

The easiest, no sweat method.

Game Killer will block XP gain which means that the enemies will also stay locked to the lowest HP possible, as they won't level up either. The secondary effect of this Arcana will turn XP gems into missiles that will deal additional damage.

Leda's starting weapon "Holy Wand" is easy mode against tier 1 goons.

Mini bosses will take some maneuvering to avoid damage.

Completion will take around 15 minutes.

[Canyew]

Did porta with game killer then used mad forest (IIRC that's what it's called) Porta's ring when they are level 1 already spams. Max the ring out then evolve it and you just stand around deleting everything.

Fyi your guide is a great way of doing it to, there is always different ways of solving the same problem.

[Azalius]

Eh, for me I'd recommend Porta with the Silent Ol' Sanctuary Arcana and only one weapon. This makes her Lightning Ring extremely strong even at level 1, leaves room to level for good passive items + leveling LR, and also the chance to also get Tragic Princess and really be zapping every second, or Awake if you're having survival doubts.

Fairly easy clear.

[neVraska.你气不气?]

This really was easy mode. thanks!

[Phobos]

Thank you a lot, I was stuck on the Deaths (12min~), I succeed now !