For some reason, I almost never am the main character in my dreams, but the narrator - I see things happening and I think and comment them. Anyone else like this?

Anyway, when I actually am an active participant in the dream, something fucked up tends to happen. Last night, I dreamed I discovered a new flight of stairs in my house, which lead to three new rooms. The two first ones were pretty empty and boring. The third one was a gym, with eight absolutely identical shirtless muscular guys who also happened to be my enemies. I had this huge-ass sword, and moving exactly like a videogame character, I saw myself from the back in 3rd person perspective, and I killed them one by one, each one with an horizontal slash accross the stomach. Then I felt disgusted by all the bodies around me, each one severed in two. I felt like I should show compassion and make sure they are all completely dead so they don't suffer for hours (lol dream logic), but I couldn't do it (lol dream logic).