It is very flexible and most skills can be interchanged because the bulk of the damage is caused by Mark of Rodgort/Sever Artery and a Flame weapon.
Attributes:
Swordsmanship: 10+1+3
Fire: 10
Tactics: 10+1
Strength: 5
Skills:
1. Rodgorts Invocation
2. Hamstring
3. Sever Artery
4. Gash
5. Victory is mine [Elite]
6. Glyph of Lesser energy
7. Conjure Flame/Heal sig/riposte < option to go more offence or defence
8. Res sig
Equipment:
Gladiators Armour Set
Set 1 firey sword + Enchanted Shield
Set 2 firey sword + fire focus <
sometimes I have carried a sword with a zelous mod and In some instances a fire wand to burn them from afar.
Basically cast conjure flame just before combat followed by Glyph of lesser energy. Choose a soft target and hit them with rodgorts when you have built enough adren for a sever artery. In my experience they try to run away at this point (maybe its the constant -10 degen I dont know

If CA is full of warriors I sometimes like to bring along riposte then after killing the squishes this build drops most warriors quickly 1 on 1 even when holding a focus.
Ok the weaknesses are obvious, energy denial will render it usless but hey that happens rarely to warriors in random arena anyway. Hex removal kind of spoils the party too.
Condition removal is not really a problem due to the constant application of Bleeding and fire.