This is the script on the ability he has that should move him outside of the arena.
Scriptname Merc_Script_BaseBleedout extends Actor;ObjectReference Property MercChoiceMark autoGlobalVariable Property Merc_Glob_LevelTimer autoEvent OnHit(ObjectReference akAggressor, Form akSource, Projectile akProjectile, bool abPowerAttack, bool abSneakAttack, bool abBashAttack, bool abHitBlocked) if GetActorValue("Health") <=0Merc_Glob_LevelTimer.SetValue(1) endIfendEvent
Any help appreciated.