What happened to Vaako at the end of Riddick?

Could you please elaborate on the fate of Vaako at the conclusion of the film 'Riddick'? Did he ultimately triumph over his adversaries, or was his story met with a tragic end? How did the final sequence of events unfold, and what impact did it have on the overall narrative of the film? I'm particularly interested in understanding the motivations behind Vaako's actions and the consequences they led to in the film's climax.