Swapping can also help improve the quality of your Keepsakes, as you will find them improving with each encounter you complete while wearing them. You will be able to swap these Keepsakes after each boss. For example, the Lucky Tooth or the Chthonic Coin Purse. We recommend you to keep swapping and changing your Keepsakes because most of them only have one specific use. To do so, you will need to spend Gems at the House of Hades Contractors. The Keepsake Collection is an important upgrade that you can acquire early in the game. You can identify characters you need to speak to because of the exclamation marks over their heads. While you can do so with Nectar, talking also plays a huge role in how well you do in the game.