- Paste the sprite sheet into the Unity hierarchy, and into the game window

- In the inspector change the sprite mode from single to multiple, then click Sprite Editor

- Go to Slice, change to Grid by Cell Size

- Set the dimensions to fit each sprite and click slice, then apply and close the editor

- In the project window at the bottom, click the arrow next to the sprite sheet to view each sprite

- Click on the sprite in the game view and add an Animator component

- Create an Animator Controller in the project window through right click > create

- Select all the sprites, right click and Create > Animation

- Double click on the animation controller to open it, then drag the new animation into the window