RW-Avowed

Further to the above post, I reloaded to a autosave before entering the cave , killed him the second time and he dropped the trophy. So it's definitely worth going back to a previous save if you still have it and keep on trying until it drops.

Same issue here, I had the bounty quest tracked, went into the cave, killed everything, Belderreno did not drop a trophy. sort of glad that others are experiencing the same thing, with luck we will get this patched!