I'm a big fan of turn based RPGs, so I enjoyed playing this. Being able to save anytime you want is great when playing on a handheld it gives you the flexibility to just play a few minutes. I liked the shortcuts and teleports into the deeper levels of the dungeon because it saved me from walking trough areas I've already beaten.
I think a great improvement would be to tell the player how many damage his attack has done. I understand that you don't want to tell the player the enemies hit points to keep up the tension during the fight, but maybe you could display something like "Your attack dealt 3 damage". Without knowing how much damage my attacks are doing, I didn't feel any progression through leveling up and finding better equipment.