In order to buy Sword With Sauce, select the offer that suits you from the list. Click on it, after which you will be taken to the store website where you can buy Sword With Sauce.
Select your weapon, your gadgets and then your play style as you enter ready to take down all the enemies patrolling the level. You can either go in guns blazing, with a mad desire to re-colour the walls red or take a more delicate approach as you sneak your way around the level avoiding detection.