Some of the dialogue is weirdly written. There are plot holes laying around, e.g. the police officer not carrying a gun (really, the gun and trigger happy USA not carrying a gun?). A single person somehow taking on 7 people alone successfully? Other than that, the grammar is decent, the flow of the story is okay.

Generally just poorly written, I felt like I was pulling my tooth while attempting to read, it may get better in later chapters, however after finally reading 12 chapters I had to give up.