Every room is a tunnel of laser walls flowing straight at you. The gap in each wall drifts a little from the one before, so you sway, duck, crawl and army crawl along a smooth path, with a jump or two. A quick walkthrough shows you the route first.
Follow the gapsway left and right
Crawlhands and knees
Army crawlflat on the floor
Jumpa small hop counts 3x
Set up: put your laptop or phone low (a chair or the floor works great) and step back about 3 m, so the camera sees you head to feet. You need room to lie down sideways across the screen.