Sodecho TeamRecord from the start
Head to the Rift in the bottom-left corner. From then on, every step you take is recorded. The echo appears 7 steps later and repeats everything, in order.
Shove the crate into the corner
Go up the right side and push the crate left, all the way into the top corner. When an echo walks into a crate wedged against a wall, it bumps and skips that step. That's how you set its clock.
Dance around the plate
The steps you take around the plate are your echo's script. The goal: it should finish that script stepping onto the plate long after you've left.
Run for the gate
Go down and run right. As you step up beside the gate, your echo steps onto the plate: the gate opens and stays open while you're standing in it.
Show the full solution (43 steps)
In four parts, matching the moments above.
1←←←←←↑↑
2↑↑↑↓↓→→↑↑←
3→↓↓←←↑↓↓↓↓↑↑↑→↓←↓↓
4→→→→→→↓↓