Golden Triangle: Kill or Die

From the introduction:

The last thing you remember is a new found friend at a tavern buying you another round of Goblinoid Pale Ale. Now your head is pounding, you’re clothed in nothing but a filthy loincloth, and you’re about to die in what appears to be an underground fighting arena. A wooden door rises and you step from an iron holding cell into a triangular open-air wooden arena painted a fading gold. Six tiers of seating hold a full capacity crowd who half-heartedly cheer your arrival shouting, “Kill or die!” Unlocked wooden chests lay at each corner. Adjacent to your position, two other bleary-eyed opponents stumble onto the triangular sandy floor, which you notice is strangely pink in areas. Apparently, you’re the opening bout.