Dick planned on looking quite calm, ready to negotiate, but as soon as Slade opened the door, Dick couldn't help but glare, defiant.

Yes, Dick was bleeding from five places, two of them places you probably shouldn't; yes, Dick was showing up at Slade's of all people's for help against the better judgment of anyone with a brain; yes, somehow none of this tempered Dick's desire to tell Slade to go fuck himself, to basically dare Slade to kill him instead of save him.

Slade saw the injuries, looked up with worry, then saw Dick's face and grew angry; Dick could tell that Slade was reading a different kind of challenge into this, that Slade thought that Dick was glaring in smug disdain that he had so much emotional power over Slade that he could come to him this vulnerable and survive; but somehow, despite this act of aggression (in Slade's mind), just as Dick was considering trying to find the physical strength to walk away, Slade said, "Come inside, you're bleeding on my welcome mat."