"Kharak is burning." (Emotional moments in games)

World In Conflict, with its expansion Soviet Assault was a fun game with very well done cut-scenes. One character arc in particular followed an American Captain Bannon who is introduced very much as an unlikable figure and nemesis to the main player character, but gradually his backstory is revealed and you begin to feel for him as you understand him a little better. Ultimately he goes into the final battle vowing to himself that this time he won’t screw up, that he’ll redeem himself for all his prior mistakes.

And he does, he sacrifices himself to cover the withdrawal of the others and dies a hero.

It was surprisingly subtly done, though that game in general didn’t really get the recognition it deserved in my opinion.