Loki watched with a little smirk of amusement eyes flicking down to the mans legs and back up again, he'd expected the man to trigger some sort of alarm, it suited him fine. This was going to be a flying visit after all. However, from the look of disappointment the alarm must not be working and the thought makes Loki want to laugh right in the mortals face. He refrained and pressed the dagger a little deeper, enjoying the dribble of blood sliding down that expanse of neck to stain the agents immaculate shirt.
"Can I not just come to visit you?" Loki asks, mock offence contorting his features to something far from sincere. Though he rolls his eyes at the Agents 'subtle' movements. "Now, Now. None of That." With a flick of his wrist a small throwing blade shoots out and embeds itself in the agents arm. Impossible to miss at such close range and perfectly aimed so that the blade doesn't hit anything important, but would probably sting quite a bit.
Loki had had several weeks to gather his strength, he was sharp as a tack and in no mood for unexpected complications.