Related Clues:

• Say imperial units are a remarkable achievement
• Achievement needing skill, strength, etc.
• Hated missing trial action
• Action; legal document
• Intentional action
• Joke heard in a tale of adventure
• Conscious action
• Significant achievement
• A conscious action
• Act mirroring part of alphabet ?
• Lots of food, but no seconds? That's some achievement
• Conscious act
• Something to brag about
• Safe-deposit box item, maybe
• Ownership card, in Monopoly