There is a new detailed blog post about the accessibility and other options including difficulty for Dragon Age: The Veilguard launch. A few options like difficulty levels are detailed as follows

• Storyteller
  * Here for the story.

• Keeper

  • A balanced combat experience that emphasizes party composition and equipment choices over reaction times.

• Adventurer

  • A balanced experience that places equal emphasis on combat, party composition, and equipment choices.

• Underdog

  • Here to be pushed to the limit, requiring strategic planning and tactical decisions.

• Nightmare

  • Overwhelming battles that give no quarter. Requires a mastery of combat, equipment, skills, and game mechanics to survive.

  • Selecting Nightmare cannot be undone without starting a new playthrough.

• Unbound

  • Customize all settings.

  • Settings impact numerous aspects of gameplay. If this is your first time, consider a curated preset instead.

Even after selecting a difficulty, there are more combat options available in the Settings Menu if you wish to make further adjustments. For example, you can adjust elements like parry timing, aim assist strength, or even how aggressive enemies are.

Check out the blog post above for even more details. Dragon Age: The Veilguard launches for PC and consoles October 31st.