[Overview] The 3 Styles - Assassin, Hunter, Warrior
[Front-paged. -stabguy]
AC Odyssey allows you to select a playstyle you enjoy and get extremely powerful within it. Someone asked me, "Should I favor Warrior (Open Combat) or Assassin (Stealth)? What kind of character should I prefer? What is the Best way to play this game?"
This is what I told him:
The best way to play, is to make sure your actions resonate with the playstyle you've chosen.
Any build you choose can be good. But if you play that "style" wrong, it will be very bad.
Maybe you're a sniper or a ranged weapon fellow who loves to shoot people and click heads.
Maybe you're a ninja who likes to harvest entire compounds without being noticed, stabbing people and cutting throats.
Maybe you're a badass fighter who gets a rush out of taking on entire hordes of enemies.
They can all be powerful, and they can all win.
However, whichever one you choose, you should put in the time, effort and knowledge to get good at that.
I'm playing Assassin on Nightmare Mode, and I can still win fights. I just have to play the right way, play cleverly, and use what the game is giving me in order to come out on top. If I don't squeeze out every bit of potential my build can give me, I will die because I'm not really set up for direct confrontation.
If you have a lot of Assassin Skills, you should prioritize trying to stay in Stealth as much as you can, because that's where you're going to be strongest. When you fight, you should fight very dirty and dishonest, and do huge damage to the most dangerous enemy in a group so you can deal with everyone else more easily.
If you have a lot of Warrior skills, those are going to waste if you're not fighting people, so you should try to brawl enemies as often as possible.
And if you're spamming Hunter Skills every time you Level Up but you never actually shoot anyone, you're not using the investment you've made and your powerful Arrows are just sitting in their quiver doing nothing.
I enjoy playing Assassin the most, so that's the kind of character I've built. From my perspective, that's the best way for ME to play this game, but other people might enjoy something different. Someone else I know has a lot of Warrior Skills and is practically a Pyromancer with their weapons burning people to ashes and doing lots of Damage Over Time, and another person I know uses Hunter Damage with Devastating Shot to take down really hard targets.
Ask yourself what feels interesting to you, and get REALLY good at that. That's the best way to play.
I wish there was a video like this for AC Origins.
Hmm... I might make one, but the problem with Origins is that your build doesn't really inform how you'll play. In Odyssey, you have to play with Opportunity Cost, whereas in Origins you can kind of just get everything. In Origins, your Damage Types raise in parallel as long as you craft up your gear. In Odyssey, if you want to have a lot of Hunter Damage, you are sacrificing Assassin and Warrior. It all just means that building a character is a genuine choice in Odyssey, creating a strong playstyle at the expense of weakening the others. Origins just kind of lets you get flat upgrades on everything. 
If you still think it's something you would enjoy seeing, I would happily make it, though!