For anyone that has played the full game and likes the combat, can you explain in detail why you like it? What is it that you think makes it enjoyable?
I've played the Judgement demo for over an hour. I don't see myself enjoying the combat much based on that.
I have already written off the story as ranging from mediocre to trash. So I would like to determine whether or not at least the combat can be good enough.
About 15 hours in, so take what I'm saying with that context.
There's a fair amount of depth involved in the combat that you're just flat-out missing in the Judgment demo unless you speak JP. Link attacks, for instance, make positioning Noctis important on more difficult enemies. They do more damage and have a higher chance at knocking off appendages.
Beyond that, there's a heavy bit of tactical usage of the Warp and Warpstrike going on to keep Noctis in the fray as much as possible while retaining movement. Once you get good at it, Noctis is zipping around the battlefield.
Enemies are weak to different weapon tpes so you change them around mid-combat to make sure you can actually kill stuff. Along with that, there are different strikes associated with holding a direction. For instance, if you hold O and Left/Right on the L-stick while fighting, Noctis will dodge around an enemy to help you get behind things easier. Each weapon has 3-4 different "combos" it can do.
Allies get more link specials that increase their utility. Ignis' Regroup is a lifesaver whilst Gladios' Dawnhammer does NASTY damage and can stagger an enemy.
On the topic of stagger: If you break certain body parts (by targeting them) on larger enemies you can induce a staggered state and that allows you and your allies a period of freetime to do a lot of damage.
Then there's the Elemancy/Magic--and it's the biggest thing you're missing in the demo if you don't read Japanese. The depth involved in making appropriate spells is pretty interesting. You can add things like Stop or Quadcast or Poison to the Fire/Blizzard/Thunder spells as well as turning them into personal cure spells. Once you get enough magic slots you can have situational magic ready to be equipped whenever you need them.
All-in-all there's a lot going on and it's far more complex than the demo makes it seem. Keep in mind it's on easy, so there's absolutely no challenge involved. The full game can be incredibly challenging, even on level-appropriate (or below your level) monsters. If you're looking for P* combat you won't find it here. It's probably my favorite ARPG combat that isn't mash-y but I think a lot of people will continue to think of it as KH2-like and I don't think that's 100% wrong. It's different but still similarish.
Do you think it's better to watch Kingslaive before buying the game ?
My recommendation is to watch Kingsglaive and Brotherhood, yeah. It gives things better context and helps you gain some attachment to the world that--admittedly--the game doesn't do a fantastic job building initially. The dynamic between the four is great but it's all the game is banking on so far, really. That and some smaller levels of intrigue. It reminds me of a D&D/tabletop game in that regard. Worldbuilding/Plot happens very slowly while character interaction takes the forefront for a while.