Well, based on what happened in the latest chapter...With that full body, 3rd degree burn expect a miracle.
The miracle was Armin getting injected with the Titan Serum, turning into a mindless Titan, devouring Berthold a.k.a. the Colossal Titan and acquiring his Titan Shifter power.
@arisboch Yep. But man, that form and look...I was expecting some one-of-a-kind look for him, like Eren's...
It was mentioned in the comic that the appearance it determined by the Titan Serum they take and not the Titan Shifter they devour (chapter 65, page 29).