In its last iteration, Atlas was tethered to an external power source. This version is battery powered, sleeker, quieter, and much more agile.
It navigates using Lidar and stereo sensors in its head. Sensors in its limbs keep it from tipping over. All that gadgetry lets it navigate snowy terrain, pick up boxes, and stand up after being shoved to the floor. Some of those sensors even appear to recognize QR-like codes on boxes and doors.