Normal Attack
Performs up to 4 consecutive spear strikes.

Charged Attack
Consumes a certain amount of Stamina to lunge forward, dealing damage to opponents along the way.

Plunging Attack
Plunges from mid-air to strike the ground below, damaging opponents along the path and dealing AoE DMG upon impact.

Chevreuse quickly shoulders her musket and fires at her opponent(s), dealing AoE Pyro DMG.
Hold to fire in a different fashion.

Hold
Enter Aiming Mode, locking a target in her sights to fire a precise interdiction shot. If Chevreuse has an Overcharged Ball, then she will fire the Overcharged Ball instead, dealing greater Pyro DMG in a larger area.
Chevreuse gains 1 Overcharged Ball every time a nearby character in the party triggers an Overloaded reaction, and can have up to 1 Overcharged Ball at a time.

For a short duration after Chevreuse fires a shot, she will continuously restore HP to the active character on the field. The amount healed is based on her Max HP.

Arkhe: Ousia
Periodically, after Chevreuse's Short-Range Rapid Interdiction Fire hits, a Surging Blade will be called forth that deals ousia-aligned Pyro DMG.

"Actually, training regulations only had the phrase "interdiction fire," but the protagonist of this novel believes that even how stylish your terminology is can affect how motivated your troops are, which can put your opponents on the back foot right from the get-go... I think that's a good point, so I changed the regulations!"

Chevreuse fires an explosive grenade at opponents with her musket, dealing AoE Pyro DMG. After the projectile hits, it will split into many secondary explosive shells.
The secondary explosive shells will burst after a short interval, dealing Pyro DMG to nearby opponents.

"Theoretically, a rectangular blast would be most efficient at destroying enemy formations. Unfortunately, the cross-section of an explosive shock wave is round, like most cakes. So, the secondary explosive shells can only be arranged like the fruit on a cake, forming a ring around the edge.