It does, pretty clearly. Before Dunban shows up there is a fight against mechon with only Reyn and Shulk that you literally can't get past unless you break and then topple them, thus demonstrating the mechanic.
I got past that because it literally said, "Use Attack 1 with Shulk, then use Attack 2 with the other guy."
Then when I got to that boss, Shulk no longer had Attack 1.
And even if he had, the other guy died before I figured out how to do a chain attack, because the game did a poor job at explaining that, too.
When I finally did figure out how to do a chain attack, I had no idea which of Shulk's or Dunban's attacks to use. And since I was in the middle of battle, I couldn't check any of the help stuff. And then I had no more juice, because they didn't explain that bar, either. And then I literally set my controller down for ten minutes and couldn't die, because Dunban was dodging all the attacks directed at him and revived me when the boss decided to attack me.
No. You probably could've done a better job of actually reading the text/paying attention to the dialogue when they were very clearly explaining it, like everyone else who played the game.
Nope. If the player can't figure something out, the designer could've done his job better.
You know how Portal rarely ever forced blatant tutorial messages on the player, yet players were still able to learn and understand the complex space-bending mechanics through experience? That's because Portal is a remarkably well-designed game with a remarkably well-designed tutorial.
This game does not have a well-designed tutorial. It just kinda throws messages at the player and says, "Okay, I hope you got all that!" I'm sure a lot of the things I've had trouble with were explained through those, but trying to teach me the intricacies of the combat system when I barely understand the basics is like trying to teach someone how to manually shift gears when they're still trying to figure out how to open the car's door.
It probably doesn't help that I've never cared for RPGs, JRPGs specifically, so most of these mechanics are completely foreign to me.