Mate, this game is crazy. I never thought I would get addicted to killing and I see it's the same for you. That guy in stores like a pizza shop, video store, etc is too weird I don't know from where, but something shady he was into. I think when I played it at the beginning I felt the same, if you want to get an A+ it's advisable to go through the levels and use Zack's (frog) mask for combos which is one of the things that most influence the grades besides the time of course.
I think it's a good way to complement your content because you show the person who hasn't played it how it is and that can make them more interested in it, at least I liked it a lot, plus it's cool to record yourself playing it. Very good post, I can't wait for you to get to the decisive parts of the Bosses and what happens at the end, I'd like to see it in gameplay. I will give a chance to Hotline Miami 2 to see how it is and if it is worth as much as this (by the way what a good bargain you bought it for 2$).