Nope.  Don’t need to have read volume 1 to understand these.  I’ll fill you in:  Cyber-ninja guy patrolling through a post-apocalyptic cityscape.  His own teammates want to kill him after he kills a bunch of rebels.  Chapter 3 begins the mother of all gunfights, what the whaaaat.

Check it out, starting here:  Echo, Volume 2, Chapter 1.  Enjoy!