Just finished chapter 5. Not as strong of a finish as chapter 4, but I understand why it needed to exist. But after the emotional epiphany of chapter 4, chapter 5 just didn't really resonate as strongly.
My final time was 36:42:59. By far the most content rich game in the series, which is surprising given the platform. Time to go back and do Extra Ops!
And I haven't even seen the monster hunter stuff yet. Still a lot of stuff for me to do, although now that I've gotten better at the game, the stealth is ridiculously easy. Boss battles are gonna be where the real fun and challenge lies for me.