Arsen

Swordsmanship
Fighting with a sword made to reflect his soul creates a sync that isnt there with natural weapons, he has mastery of the weapons he creates though they are fairly untested since his arrival in the grand line.

Hand To Hand Combat
rarely engages in pure hand to hand since he is never without a weapon of some kind, so his hand to hand skills are unknown but probably average or lower.

Physical Strength
is incredibly strong having never found an equal or better outside the grandline.

Agility
is rather fast outside using soru, he has an aptitude for dodging attacks others may not be able to.

Weapons
only uses weapons created by the Gugen Gugen no mi:

Sword: 

Usual confidence level- breakable but the blade never dulls from use, light as a feather to him, impossibly sharp.

As confidence lowers- blade dulls, weight becomes evident to him, becomes easier and easier to break

Bow:

Usual Confidence level- incredibly high impact, range equal to distance he can sense, effortless to draw.

As confidence lowers- impact lessens, range drops quickly, effort to draw increases.

Haki
Kenbunshoku-Mastery

Busoshoku- Mastery

Rokushiki
Soru- Master

Geppo- Mastery

Tekkai- Master

Devils Fruit
Gugen Gugen No Mi - A paramacia type devil fruit that once eaten creates  weapons as reflections of the users soul. This weapons are affected by the users confidence level, at full confidence in themselves the weapons are unbreakable and function optimally. As the user loses confidence the weapons weaken in ways specific to the type of weapon.