Haruto's reaction to the spear drawing back is to try and grab it, though there's no sense in doing so. There's not a lot of sense left in him, period. There's the absent idea of possibly wrestling it away, but no idea of what to do past that. And then, no need and no time, for Thor is quick to drive that spear into his heart rather than his guts.

His own legs can't support him any longer, and that confused look on his face is giving way to horror. He has lost, and now he knows that he has lost, and now he is dying. With the spear pulled free one last time he lets out a choking cry and collapses. If he's not dead then, then he's surely dead shortly afterwards. Can the canon boom even be heard this far underground? Maybe they'll pipe it in for everyone's benefit.