Very nice atmosphere in this one, you deffinitely got this style down. Good work!

A Castaway walking determined under a black sky surrounded by debris, broken steel and dirt, a weapon clutched in his hands, yet idle in its behaviour, awaiting to clash with his biggest foe yet.

Remembering the sacrifices, seeing the peace that others will enjoy, but he won't likely be around to do so as well.

When he finally raises his blade, the battle begins, and it doesn't take long until even his foe understands that this here will be a onesided battle.

As the Castaway swings for his last blow, the winds are restless and the silence heavy, and as his foe hits the ground, he still stands there ready to fight even though the battle is over. He won.

I love the foreboding and climatic mix of the song, it has a nice narrative to it that can make it applicable to a final battle scene or even an overall story.