One thing I absolutely hate is dying on the part where the path is snaked around the hexagon, where I either don't move fast enough, or I'm moving the wrong way, lol.
Plot twist: Middle island is easier than most of the surrounding islands. But I'm so glad that this game will cancel abilities if we reach the chests, since some other games will be cheap, activating the Cool-down on that used ability the moment we select it, no matter what the circumstances.
I find that it's best to make the 4th character (Kaz) a healer/Slayer once he is requited. Monsters and bosses alike will get harder, so it's good to keep an additional healer on your team just in case.
I find that for the final boss, it's all right to skip your turn if you see that there is a row/column in which will likely give the opponent a Special attack/Damage the next Turn if you adjust it. Don't get greedy.
Shooting for a goal objective can become really repetitive.
It'd be nice if we also had the option to play on the defence, and often switching so we get a feel of playing in both positions.