You likely need to revisit the tutorial NPC and finish the unlock step , because the Stone Dagger recipe is tied to completing the tutorial with Slayer Master Vanaka near the Windmill. One guide also states the dagger itself is crafted from 8 Stone and 4 Ash Logs at a crafting table, but the recipe unlock appears to come from that tutorial completion step.

What to do

  1. Go back to Slayer Master Vanaka near the Windmill.
  2. Complete the tutorial if it was skipped or left unfinished.
  3. After the unlock triggers, build a crafting table and craft the Stone Dagger using 8 Stone and 4 Ash Logs.

If it still does not show

  • Try talking to the tutorial NPC again after relogging.
  • Make sure the tutorial quest is fully marked complete.
  • If you skipped ahead and never got the recipe pop-up, the game may require the tutorial flag to be set before the weapon appears in the crafting menu.

Crafting note

The weapon itself is simple to make once unlocked, and the materials are early-game resources you can gather quickly from the starting area and nearby roads.

TL;DR: You unlock Stone Dagger by finishing the tutorial with Slayer Master Vanaka; skipping the tutorial usually means you need to go back and complete that step before the recipe appears.