The guard was out cold, but thatnkfully still breathing. The raw force of the impact against the cold marble floor after Mantis' spell had given him quite a blow to the head. As you dragged his dead weight towards the lift, a small smear of blood followed his body, highlighting his route and resting place in the lift.
The guard's transceiver crackles with radio chatter as the doors close with a ping, muffling the transmission as you move across the camera's path and head towards the lift, hugging the base of the reception desk for cover.
There are two lifts in this bay, with one call button. the screen indicates that one is at the fourth flour and one is at the ground floor, both doors are closed.