You probably need to level your guys to get more stats. If you just plow through, you'll eventually hit a wall because your levels are too low.
To level up, you'll need to feed your main guys with fodder. Generic monsters aren't good for exp, so you'll want to stick to pengdras and metal dragons for exp. Those are mainly available in special dungeons, or timed dungeons that open in certain windows during the day.
http://pad.wikia.com/wiki/Feeding_Monsters
XI Wiki





