I can recommend getting the first two weapon belts as soon as possible, juggling between one weapon and a side arm is a total pain in the ass. Same goes for the loot bag, you'll run out of room in no time.
Game is so awesome. I absolutely love the setting, it's just so well done. The atmosphere, the music, the wildlife. Those huge, epic mountains all around you. Some rants:
- I love the grappling system. I thought it was going to be wonky as hell but it works surprisingly well.
- Another ting I noticed is how good the facial capture is, the animations in cutscenes are aces.
- Karma system is cool, it's nice to run into random events and help people out.
- Auto-drive is a genius addition.
- Buzzard is super cool.
- Pagan Min randomly calling in for shit talking is funny. That one dude who concern tweeted that Pagan Min was in the game for 10 minutes tops is a scrub.
Even with the PS4's AWFUL screenshot compression / blurrification it still looks pretty damn cool.