Easy Level-Up:
     On  the  west  side  of the second floor of the ancient city, you
will find an area with six faces shooting flaming arrows to block your
path.  After clearing the area of baddies, stand to the left (or right
side)  of  one of the faces. Equip a semi-powerful and fast sword that
will  kill the face in one shot (lethal rapier should work). The faces
respawn infinitely, and at 50hp a shot, it doesn't take long.