Blacksmith Helper is an achievement in Dave the Diver.
After unlocking Duwa as a merchant, you can sell a few items to him. To easily unlock this achievement, simply collect and sell easy loot items, like starfish, seashells, etc..
Note you don't need to sell one at a time: selling in batches will still count the total items sold. For instance, if you sell him 50 Red Starfish all at once, it'll count as 50 towards the achievement.
Description[]
- Sold 200 items at workshop.