Archetypes
Rolling Unopposed
When nobody is opposing you, the GM will pick a target number (TN), ranging from 7 to 20 or higher, based on the circumstances. The result of an unopposed roll is a pass-fail result. Below are examples of how you might describe the difficulty of tasks like these.
Target Number Difficulty Table
Easy (7 or less)
Anybody with half a brain can pull it off.
Average (8+)
Basic competence is required, but there's still a chance of screwing things up.
Tricky (11+)
It's not as easy as it looks; you need real training or things could go sideways easily.
Hard (14+)
Most experts have trouble with the task, even with the correct tools at their disposal and a comfortable environment to work.
Stressful (17+)
Only a master of the craft has any hope of succeeding at the task. Even in the best of circumstances, most fail.
Legendary (20+)
You question whether any amount of skill makes a difference, but you're one of the best in the world, so who better to try?
Dungeons & Flagons