So I finally mustered up the motivation to not only do the Nightmare run on this game, but I also made that my collectable and miscellaneous achievement run as well.
I'm pretty much at the end to find out I missed a single thermos or two somewhere along the way (I used the walkthrough)... no clue where those could be. There was a portion of Episode Five that sticks out to me because I was really tired that night and proceeded to quickly without collecting everything in the area. If everything I missed isn't there, then I guess I have to play through the whole damn thing again to find it.
To top it all off though, I'm 100% confident now that Gunless Wonder is glitched. My first time through, I didn't realize that it was an achievement until a minute or two into the Episode and when I didn't get the achievement I assumed I must've popped a cap or two off in those early minutes. This time around, while tracking down collectables and playing on Nightmare... I made absolutely sure my hand never even touched that right trigger. Bam, at the final boss and no achievement.
Really disappointing. At least I'll get the achievements for beating it on Nightmare and for the manuscripts... I really don't see myself completing this game though.
EDIT: Err... took a few steps closer to the boss and Gunless Wonder popped. Spoke too soon lol. The thermos thing still bugs me though.
Oh, they love us American boys.