Invisible Viking Cipher III: The Final Frontier

Space vikings, our time here nears its end. When the new ship is complete, these will be your final orders:
hvergistarff
Stanisław
tilkváma
spá
Non-space-vikings, please disregard this post — it does not apply to you. If you cannot decode what was transmitted, you are not a space viking.
If you protest that you are, in fact, a space viking through claims of ability to read Future Futhark or having some ancestor called Gorm of the Moon or Volstagg Redaxe, but, regardless, you can’t see the cipher, then you, my friend, are no space viking. Stop shaming yourself with claims to the contrary.
We will return to our regularly scheduled posting shortly. Thank you for your patience.