Christensen hit a screamer in last night's victory over Euro 2020 opponents Russia.
Hjulmand later said: "AC is just one of the best defenders out there.
"He has everything he needs, and the performance here was top notch."
The coach also said, "People who did not come in and play, I have deep respect for, and those who came in made a difference. We have a staff that has worked hard and I just want to say that it is impossible to describe what this team has been through the last four weeks. It's hard to grasp."