I'm playing right now and overall while I think the game is fine I'm having difficulty wrapping my head around the combat. Finding it a bit too hard atm. I did the weakest version of the Titan simulation fight at level 21 with all three divine shrines discovered and it took me 10-20 attempts.
It's tough to see enemy attack telegraphs and when there are more than one non-trivial enemies to fight it feels like a pandemonium.
One thing I realized is that you should be switching characters frequently. The AI also targets your active player, so it makes the combat easy to cheese, but if you want to get the combos and healings out, the game seems to want you to do a combo, switch characters, do a combo, switch, etc.
It seems like a pain, but it did make it more fun than just waiting for your bar to fill up.