This video is pretty much what he talks about.
Keep fighting. Keep pressing on.
Compromised positions. Odd cover Injury.
Shoot and move.
Study keano Reeves/John Wick....watch how he moves....focus on how he thinks on his feet.
https://www.youtube.com/watch?v=U_yk0inTdhk
The rest are just blasting away with guns in a video game.