There are three difficulty levels for Watch Dogs: Legion:
Easy, Normal and Hard.
To change the difficulty level:
• Open the main menu or pause menu.
• Select Options, then Gameplay.
• Go to the Gameplay tab.
• On the Single Player Difficulty option, use the arrows to pick the difficulty you want.
You can change the difficulty at any point throughout the game.
For an extra challenge, you can also try Permadeath mode
If you have any other questions, please get in touch