On this page of Assassin's Creed Valhalla trophy guide, you will learn how to unlock A Picture of Grace trophy. This achievement is awarded for running into 30 breakable objects.
This trophy can't be unlocked initially, as the "standard" sprint is not capable of destroying breakable objects. You have to get to the top of the skill tree by acquiring and spending development points and finally buy Sprint Bash skill. It allows you to hit people AND objects while sprinting.
Objects suitable for destruction can be found in virtually any larger location. A good place to get the trophy quickly is the Black Peak lookout point from the Grantebridgescire region. Inside the ruined tower there is a huge number of breakable jugs.
In order to initiate a sprint, you must have the left analog knob pressed all the time. Only then will Eivor start a "strong sprint" and automatically destroy all small obstacles in his path. Repeat this until you have won the trophy.