The Helicopter? 5 Tries sound about right. Things started to click and I was feeling fine going further into chapter 1. Even got an S and A rank replaying missions… uuuuutil I got stuck on Balteus for about 4 hours.
Sea Spider went down in about 5 tries…
To further add you would have to have more then one million downloads per year and also not fall under "Nonprofit organizations, accredited educational institutions, and government entities".