A good strategy to defeat enemies is to run up to an enemy when there is a ledge nearby and press Triangle to get behind them and then quickly press Triangle again to throw them either behind or in front of you (depending on which way you aim the Analog-pad). Enemies thrown over the ledge will automatically die. This attack works on ALL enemies except for shadow creatures, Thralls and Bosses.
It is difficult to kill women because they always block and you cannot jump over them. A good strategy to kill them easily is to run towards a wall and press Square so you launch off the wall towards the nearest enemy enabling you to hit them. Doing this is unblockable but not undodgeable. If you knock the enemy down quickly stab them while they are vulnerable and use a combo on them when they get up.
Attack them using combo attacks and when you have struck them and they are not blocking dual wield using a dagger-like object and they are then easily defeated. To perform a one-hit kill quickly press Triangle, Circle, Circle when they are not blocking.
During game play when you reach a save point there will be a vase with a extra sand slot, destroy it to get the sand and save the game. Then get killed and load your saved game and destroy the vase again, repeating this will allow you to have unlimited sand.