Do the following to get your Memory Residue (MR) back that you used to purchase an ACCESSORIES (works on accessories ONLY). First, have enough MR to buy an Accessory. Then, SAVE your game and go to where the shop is to buy an ACCESSORY. After buying it, find an area with enemies or traps and let your character DIE, then retry the zone. You will then notice that you have all your MR back just before buying the accessories. Quit the game, go to Character Options, and check your Accessories there you will see that you have the accessories you just bought from the shop but got your MR back.