How do you unlock the ability to craft Frost Arrows?

To unlock the ability to craft Frost Arrows in Valheim, you must first progress through the game and gather specific resources from the Mountain biome. Frost Arrows are a powerful ranged weapon that deals frost damage, slowing enemies and making them easier to handle. However, crafting them requires access to advanced materials and knowledge of the game''s progression system.\n\nTo begin, you need to defeat the second boss, The Elder, in the Black Forest biome. This boss drops a Swamp Key, which grants access to the Swamp biome. In the Swamp, you will find Sunken Crypts, where you can mine Scrap Iron. Scrap Iron is essential for crafting the Iron Pickaxe, which is required to mine Obsidian in the Mountain biome.\n\nOnce you have an Iron Pickaxe, head to the Mountain biome. This biome is extremely cold, so you must prepare by crafting Frost Resistance Mead or wearing a Wolf Fur Cape. Frost Resistance Mead is brewed at a Fermenter using Honey, Thistle, Bloodbag, and Greydwarf Eye. Alternatively, the Wolf Fur Cape requires Silver, which is found in the Mountains using a Wishbone dropped by Bonemass, the third boss.\n\nIn the Mountain biome, use your Iron Pickaxe to mine Obsidian, a black volcanic rock found on the surface. Obsidian is a key ingredient for crafting Frost Arrows. You will also need to gather Feathers from birds and Freeze Glands from Drakes, flying creatures in the Mountains. Drakes are relatively easy to defeat with a bow and arrows, but be cautious of their frost attacks.\n\nWith these materials, you can craft Frost Arrows at a level 2 or higher Workbench. Each Frost Arrow requires 4 Wood, 2 Obsidian, 1 Feather, and 1 Freeze Gland. Frost Arrows are particularly effective against enemies weak to frost damage, such as Fire-based creatures in the Ashlands or certain bosses like Moder.\n\nA common challenge is surviving the cold in the Mountain biome. If you don''t have Frost Resistance Mead or a Wolf Fur Cape, you will take constant damage from freezing. To avoid this, always carry Frost Resistance Mead or ensure you have the necessary gear before venturing into the Mountains. Additionally, Drakes can be tricky to deal with, so bring a strong bow and plenty of arrows to take them down from a distance.\n\nIn summary, unlocking Frost Arrows involves defeating The Elder, mining Scrap Iron in the Swamp, crafting an Iron Pickaxe, and gathering Obsidian and Freeze Glands in the Mountain biome. Prepare for the cold with Frost Resistance Mead or a Wolf Fur Cape, and use Frost Arrows to gain an edge in combat. This progression is a great example of Valheim''s interconnected gameplay systems, rewarding exploration and preparation.