- Load up Kingdom Quest campaign.
- Choose the level Ore Mine - Frenzy Battle!
- Use the tri-shot stone ammunition.
- When the level starts, aim your shots so that if you split the stones right after shooting, the bottom fragment lines up with the enemy's ballista.
- After a few seconds a Knight will spawn and head towards your castle.
- Start shooting tri-stones every 1 second. (Press A, instantly press A again to split. Wait 1 second, repeat.)
- With some patience and some retries, your shots should bounce the enemy's right into the knight.
Note: The reason you need to delay shots is simple. If too many stones are on the screen at the same time, the richotted shots will immediately despawn.