The moment the young man changed his priorities his countenance changed. Loki felt that the pressure the young man was exuding became heavier. At this point, Loki could already guess what the young man was thinking at the moment.
'So he decided to get serious now, and deal with me first.'
Loki knew that at this moment he needed to go all out. He really didn't want to kill this young man as it goes against his set of rules, but if he doesn't fight properly, it was possible that he would kill him or worst the Twin Stars.