Don would have no trouble yanking the knife out of Armin's hands. Right now, he wasn't even parsing that he was going to come back, that this was only a game. he collapsed fairly quickly, shock and desperation on his face and in his eyes.

It didn't hurt as much as he expected it to. After the initial pain, it was just a numb void, that was no longer filled once the knife came back out. Blood poured from the wound. All he could do was clutch his hands to his stomach and stare at his blood. Never before had his mind been so blank.

He slipped away fairly quickly. He could feel everything getting farther away, as though he were falling right through the floor. The shaking in his body faded with a final pathetic whimper.