Completed chapter 5-1 today. Things got a little bit challenging today, but still nothing too difficult. The boss at the end of 3-3 was pretty easy. I think I only died once and the only reason for that was because for whatever reason when I hit the button to dodge it wouldn't and I would get it. Chapters 4-1 and 4-2 weren't too bad, although trying to dodge the "lasers" while trying to fight guys was kind of tough and the "puzzle" wasn't even hard. The fight with U-8 at the end of 5-1 did prove a challenge. It was only after I used up all of my ammo that I figured out what I had to do, so I had to restart and gear up correctly to quickly get this fight over with.