Hey lovely,
Your book Corrupetd is amazing! You had the perfect opening: quick, short, and instantly hooking to the reader. It makes them wonder, what's next? Who is this person? What happened to her parents?
To really immerse the reader, show more than tell. You've already nailed that during the action scenes, but when it comes to characters, we learn about the characters more by dialogue rather than seeing it playing into action (at least at the beginning). Like the MC- she's been researching Corrupted for a while now as well as studying weapons during training. We learn that though by dialogue, and not exactly finding that out ourselves through the scenes. I don't know if that makes any sense. This is your book of course, and I'm only making a few suggestions.
Like I said, amazing job what you have thus far. Keep up the great work!