IGN have just released a campaign preview of Infinite.
Thoughts?
Halo Infinite Campaign: The First Hands-On Video Preview → https:// www.youtube .com/watch?v=SuqAiIwJOrc
EXTREMY HYPE 
According to the reviewer that was Heroic difficulty… As I have speculated looks like one of the easier Halos.
IGN are trash gamers that like to bore you with 15 of pointless chatter that doesn’t mean anything, I recommend muting them when watching their gameplays.
Overall though it looks awesome, keep in mind we’ve only seen a very small slice of the Single player.
First two minutes: I need a weapon.
Me:

There is also a game informer video with other footage 
Brutes stagger waaaaaaay too easily. Really hoping that scales with difficulty as does the rest of the AI toughness.
Good lord, I have to say I am genuinely impressed by some of the lighting and particle effects. I think I even saw cloud shadows?? The materials don’t look like plastic either. What a treat.
They played on Heroic, so only legendary and skills would make it happen less.
Looks pretty solid. I’m excited to see the achievement list.