One great 'Akame ga kill sniper' fanfic is 'The Sniper's Redemption'. It delves into the sniper's backstory more deeply and shows his growth throughout the story. It has some really interesting character interactions that stay true to the original series.
There is a fanfic titled 'Female Tatsumi: The Hidden Power'. In this, female Tatsumi discovers a special power within herself. It's really engaging as it shows her growth and how she uses this power to face the challenges in the story. It also has some great action scenes.
The manga of Akame Ga Kill is filled with intense action, complex character developments, and a story of rebellion against a corrupt empire. There are many battles, plot twists, and emotional moments.
The Akame ga Kill manga ran for quite a while. But the exact number of chapters and volumes might vary depending on how you count and which editions you look at.