Assassin does not do anything, he waits to see how the thugs react to Krusten's answer.
Krusten will see if she can figure out the hieroglyphs and let the others do the same, then knock the door using a fist to make sure they hear it.
While using his phone and genius intellect Assassin tries to see if he can decipher the meaning of the hieroglyphics.
Out of Character: Rollin in case its needed.