Worn, textured or distressed look

Must be Viking/Norse theme - symbolic elements like:
Axe/shield
Helmet
Viking ship
Norse symbols (Thorns hammer/Kolovrat/Odin’s horn)
Eg: A well-used shield and sword (or Hammer) with our logo infused into the shield with slogan under it
Must incorporate the logo in a clever way.

Could use the word Powerplay prominently as a banner or similar.

We are a heavy duty lifting gym so it could incorporate the gym theme, but in a clever/indirect way. Doesn't have to be a literal translation or anything obvious, but something that may reveal itself as you look a bit closer.

The Viking theme is the priority, with gym theme adding a secondary element (if at all).

Front of shirt will have the main design and the back will just have the word Powerplay.