Thornhearts is a 32x texture pack with an RPG theme.
In order to use HD resource packs properly (32× and higher) you will need to either patch your Minecraft using MCPatcher or using OptiFine. Optifine is preferred as it includes all of the features of MCPatcher, and greatly increases game speeds and graphics settings. MCPatcher tends to be updated on the same day as Minecraft updates, so use it instead if you are in a hurry.
Download Thornhearts Resource (Texture) Pack for Minecraft