Silver is a vital resource in the game, and unlike other resources that drop after clearing a room, Silver must be mined from deposits around the map. To gather Silver, you’ll need a special tool, the Crescent Pick. Unlocking the Crescent Pick involves a two-step process. Firstly, interact with the Cauldron in the Crossroads and select the third Incantation, Night’s Craftwork, which costs one Moly. This will unlock the Crescent Pick, but you won’t receive it immediately. Next, head to the Silver Pool and find the Gathering Tools section. Here, you can unlock the Crescent Pick, along with other tools, for one Ash. Equip the Crescent Pick and start your next run, keeping an eye out for glowing silver rocks. Each rock yields a couple of Silver, so you don’t need to find a significant amount to unlock all weapons in the game.