Loki wasn't in a hurry to kill Thor.
Simply getting rid of Thor didn't suit his taste.
He wanted to knock Thor's comrades around in front of him, and let him taste the pain.
Loki had a lot of grievances against his foolish brother. Once he got the upper hand, he would definitely repay the grievances he had suffered since he was young.
Luke, on the other hand, heaved a sigh of relief. He stepped on the accelerator, and the pickup sped toward the concrete maze.
At that moment, the Destroyer had just finished accumulating power again, and was looking at Sif, preparing to heavily injure this most difficult opponent with one shot.
Thump! Thump!
There were two explosive sparks on the transparent shield covering the Destroyer's face. Bright yellow light suddenly flickered, and the beam's launch was interrupted for one instant.
Bang! The laser beam brushed past Sif's back and blasted a concrete block, creating a huge hole in it.