Loki had just arrived and was about to open the library when he sensed someone's presence hiding in the corner. It would seem that this person has been waiting for him there. Still, hiding didn't seem like his strong suit as the person hiding wasn't even suppressing his presence. Either it's someone like Michael who doesn't know how to do that or it's someone who wants to be found.
'Should I turn around or should I play coy?'
In the end, Loki decided to play dumb as he didn't want to get involved with the unknown person. Loki took out the key to the library, but when he was about to put the key into the keyhole, he suddenly felt killing intent. Loki's sharp senses had picked up a projectile from behind him coming his way, Loki dropped his key and bent forward to pick it up avoiding the projectile and at the same time making it look like he avoided the attack by coincidence.