To create a sound sample for a hellhound attack in your game, you can record or find sound effects that are similar to what you envision a hellhound's attack sounding like. This could include growls, snarls, barks, and other aggressive noises. You might also consider adding other sound effects like footsteps or body movements to create a more realistic and immersive experience.
Alternatively, you can use synthesized sounds or create your own sound effects using a digital audio workstation or other audio editing software. This can allow you to create more customized and unique sounds for your game.
Ultimately, the specific sounds you choose will depend on the style and tone of your game, as well as the specific character and role of the hellhound in your game world.