I picked up the sword but the viking ghost didn't reply differently. And if I interact with the place where the sword is, the sword appears and disappears there.
A downloadable game for Windows and macOS
Note: This game was part of a 48h game jam, and is not a complete game.
You can download the game for Windows and Mac, or the source project. Source project is compatible with Unity 2018.3 and up.
Keyboard: Arrow keys to move, Space to interact with things, Esc to quit.
XBOX Controller: Left thumbstick to move, A to interact with things, Start to quit. (only on Windows)